Exhibit 10.3

EXECUTION VERSION

GUARANTY

dated as of

July 13, 2011

among

PITTSBURGH HOLDINGS, LLC,

THE SUBSIDIARIES OF PRIMEDIA INC. IDENTIFIED HEREIN

and

BANK OF AMERICA, N.A.,

as Administrative Agent

TABLE OF CONTENTS

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GUARANTY dated as of July 13, 2011, among PITTSBURGH HOLDINGS, LLC, a Delaware limited liability company (“Holdings”), each of the Subsidiaries of PRIMEDIA INC., a Delaware corporation (the “Company”) from time to time party hereto and BANK OF AMERICA, N.A., as Administrative Agent.

Reference is made to the Credit Agreement dated as of July 13, 2011 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Credit Agreement”), among the Company, Pittsburgh Acquisition, Inc., a Delaware corporation (which on the Closing Date shall be merged with and into the Company, with the Company surviving such merger as the borrower (the “Borrower”)), Holdings, Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer, and each other lender from time to time party thereto (collectively, the “Lenders” and individually, a “Lender”). The Lenders have agreed to extend credit to the Borrowers subject to the terms and conditions set forth in the Credit Agreement. The obligations of the Lenders to extend such credit are conditioned upon, among other things, the execution and delivery of this Agreement. Holdings and the other Guarantors are affiliates of the Borrower, will derive substantial benefits from the extension of credit to the Borrower pursuant to the Credit Agreement and are willing to execute and deliver this Agreement in order to induce the Lenders to extend such credit. Accordingly, the parties hereto make the following representations and warranties to the Administrative Agent for the benefit of the Secured Parties and hereby covenant and agree as follows:

ARTICLE 1

DEFINITIONS

Section 1.01. Credit Agreement. (a) Capitalized terms used in this Agreement and not otherwise defined herein have the meanings specified in the Credit Agreement.

(b) The rules of construction specified in Article 1 of the Credit Agreement also apply to this Agreement.

Section 1.02. Other Defined Terms. As used in this Agreement, the following terms have the meanings specified below:

“Agreement” means this Guaranty.

“Bankruptcy Code” means Title 11 of the United States Code entitled “Bankruptcy,” as now or hereafter in effect, or any successor thereto.

“Borrower” has the meaning assigned to such term in the preliminary statement of this Agreement.

“Claiming Party” has the meaning assigned to such term in Section 3.02.

“Contributing Party” has the meaning assigned to such term in Section 3.02.

“Credit Agreement” has the meaning assigned to such term in the preliminary statement of this Agreement.

“Guarantor” means Holdings, each Person listed on Annex A hereto and each other Person that becomes party to this Agreement after the Closing Date.

“Guaranty Parties” means, collectively, the Borrower and each Guarantor (each individually, a “Guaranty Party”).

“Guaranty Supplement” means an instrument substantially in the form of Exhibit I hereto.

“Holdings” has the meaning assigned to such term in the preliminary statement of this Agreement.

“Lender” has the meaning assigned to such term in the preliminary statement of this Agreement.

“Loan Documents” means, collectively, (a) each Loan Document as defined under the Credit Agreement, (b) each Secured Hedge Agreement and (c) each agreement pursuant to which Cash Management Obligations have been created.

ARTICLE 2

GUARANTY

Section 2.01. Guaranty. Each of the Guarantors irrevocably, absolutely and unconditionally guaranties, jointly with each other and severally, the due and punctual payment of the Obligations, whether such Obligations are now existing or hereafter incurred under, arising out of any Loan Document whether at stated maturity or earlier, by reason of acceleration, mandatory prepayment or otherwise in accordance herewith or with any other Loan Documents. Each of the Guarantors further agrees that the Obligations may be extended, increased or renewed, in whole or in part, without notice to or further assent from it, and that it will remain bound upon its guaranty notwithstanding any extension, increase or renewal, in whole or in part, of any Obligation. To the extent permitted by applicable law, each of the Guarantors waives presentment to, demand of payment from and protest to any Guaranty Party of any of the Obligations, and

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also waives notice of acceptance of its guaranty and notice of protest for nonpayment.

Section 2.02. Guaranty of Payment. Each of the Guarantors further agrees that its guaranty hereunder constitutes a guaranty of payment when due and not of collection, and, to the extent permitted by applicable law, waives any right to require that any resort be had by the Administrative Agent or any other Secured Party to any security held for the payment of the Obligations, or to any balance of any deposit account or credit on the books of the Administrative Agent or any other Secured Party in favor of the Borrower or any other Person.

Section 2.03. No Limitations. (a) Except for termination of a Guarantor’s obligations hereunder as expressly provided in Section 4.11 and except as is otherwise provided under applicable law, the obligations of each Guarantor hereunder shall not be subject to any reduction, limitation, impairment or termination for any reason, including any claim of waiver, release, surrender, alteration or compromise, and shall not be subject to any defense or set-off, counterclaim, recoupment or termination whatsoever by reason of the invalidity, illegality or unenforceability of the Obligations, or otherwise. Without limiting the generality of the foregoing, the obligations of each Guarantor hereunder shall not be discharged or impaired or otherwise affected by (i) the failure of the Administrative Agent or any other Secured Party to assert any claim or demand or to enforce any right or remedy under the provisions of any Loan Document or otherwise; (ii) any rescission, waiver, amendment or modification of, or any release from any of the terms or provisions of, any Loan Document or any other agreement, including with respect to any other Guarantor under this Agreement; (iii) the release of any security held by the Administrative Agent or any other Secured Party for the payment and performance of the Obligations; (iv) any default, failure or delay, willful or otherwise, in the performance of the Obligations; or (v) any other act or omission that may or might in any manner or to any extent vary the risk of any Guarantor or otherwise operate as a discharge of any Guarantor as a matter of law or equity (other than the payment in full in cash of all the Obligations (other than obligations under Secured Hedge Agreements and Cash Management Obligations)), except in each case as is otherwise provided under applicable law. Each Guarantor expressly authorizes the Secured Parties to take and hold security for the Obligations, to exchange, waive or release any or all such security (with or without consideration), to enforce or apply such security and direct the order and manner of any sale thereof in their sole discretion or to release or substitute any one or more other guarantors or obligors upon or in respect of the Obligations, all in accordance with the Security Agreement and other Loan Documents and all without affecting the obligations of any Guarantor hereunder, except in each case as is otherwise provided under applicable law.

(b) To the fullest extent permitted by applicable law, each Guarantor waives any defense based on or arising out of any defense of any Guaranty Party or the unenforceability of the Obligations, or any part thereof from any cause, or the cessation from any cause of the liability of any Guaranty Party, other than the

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payment in full in cash of all the Obligations (other than obligations under Secured Hedge Agreements and Cash Management Obligations) or other termination of such Guarantor’s obligations hereunder as provided in Section 4.11. The Administrative Agent and the other Secured Parties may, in accordance with the terms of the Collateral Documents and at their election, foreclose on any security held by one or more of them by one or more judicial or nonjudicial sales, accept an assignment of any such security in lieu of foreclosure, compromise or adjust any part of the Obligations, make any other accommodation with any Guaranty Party or exercise any other right or remedy available to them against any Guaranty Party, without affecting or impairing in any way the liability of any Guarantor hereunder except to the extent the Obligations have been paid in full in cash. To the fullest extent permitted by applicable law, each Guarantor waives any defense arising out of any such election even though such election operates, pursuant to applicable law, to impair or to extinguish any right of reimbursement or subrogation or other right or remedy of such Guarantor against any Guaranty Party, as the case may be, or any security.

Section 2.04. Reinstatement. Each of the Guarantors agrees that its guaranty hereunder shall continue to be effective or be reinstated, as the case may be, if at any time payment, or any part thereof, of any Obligation, is rescinded, invalidated or must otherwise be restored by the Administrative Agent or any other Secured Party upon the bankruptcy or reorganization of any Guaranty Party or otherwise.

Section 2.05. Agreement to Pay; Subrogation. In furtherance of the foregoing and not in limitation of any other right that the Administrative Agent or any other Secured Party has at law or in equity against any Guarantor by virtue hereof, upon the failure of any Guaranty Party to pay any Obligation when and as the same shall become due, whether at maturity, by acceleration, after notice of prepayment or otherwise, each Guarantor hereby promises to and will forthwith pay, or cause to be paid, to the Administrative Agent for distribution to the Secured Parties in cash the amount of such unpaid Obligation. Upon payment by any Guarantor of any sums to the Administrative Agent as provided above, all rights of such Guarantor against any Guaranty Party arising as a result thereof by way of right of subrogation, contribution, reimbursement, indemnity or otherwise shall in all respects be subject to Article 3 herein.

Section 2.06. Information. Each Guarantor assumes all responsibility for being and keeping itself informed of each Guaranty Party’s financial condition and assets, and of all other circumstances bearing upon the risk of nonpayment of the Obligations, and the nature, scope and extent of the risks that such Guarantor assumes and incurs hereunder, and agrees that none of the Administrative Agent or the other Secured Parties will have any duty to advise such Guarantor of information known to it or any of them regarding such circumstances or risks.

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ARTICLE 3

[RESERVED]

ARTICLE 4

MISCELLANEOUS

Section 4.01. Notices. All communications and notices hereunder shall (except as otherwise expressly permitted herein) be in writing and given as provided in Section 10.02 of the Credit Agreement. All communications and notices hereunder to any Guarantor shall be given to it in care of the Borrower as provided in Section 10.02 of the Credit Agreement.

Section 4.02. Waivers; Amendment. (a) No failure or delay by the Administrative Agent, any L/C Issuer or any other Secured Party in exercising any right or power hereunder or under any other Loan Document shall operate as a waiver thereof, nor shall any single or partial exercise of any such right or power, or any abandonment or discontinuance of steps to enforce such a right or power, preclude any other or further exercise thereof or the exercise of any other right or power. The rights and remedies of the Administrative Agent, the L/C Issuers and the other Secured Parties hereunder and under the other Loan Documents are cumulative and are not exclusive of any rights or remedies that they would otherwise have. No waiver of any provision of this Agreement or consent to any departure by any Guaranty Party therefrom shall in any event be effective unless the same shall be permitted by paragraph (b) of this Section 4.02, and then such waiver or consent shall be effective only in the specific instance and for the purpose for which given. Without limiting the generality of the foregoing, the making of a Loan or issuance of a Letter of Credit shall not be construed as a waiver of any Default, regardless of whether the Administrative Agent, any Lender or any L/C Issuer may have had notice or knowledge of such Default at the time. No notice or demand on any Guaranty Party in any case shall entitle any Guaranty Party to any other or further notice or demand in similar or other circumstances.

(b) Neither this Agreement nor any provision hereof may be waived, amended or modified except pursuant to an agreement or agreements in writing entered into by the Administrative Agent and the Guaranty Party or Guaranty Parties with respect to which such waiver, amendment or modification is to apply, subject to any consent required in accordance with Section 10.01 of the Credit Agreement.

Section 4.03. Administrative Agent’s Fees and Expenses, Indemnification. (a) The parties hereto agree that the Administrative Agent shall be entitled to reimbursement of its expenses incurred in connection with this Agreement and to indemnification related hereto as provided in Sections 10.04 and 10.05 of the Credit Agreement.

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(b) Any such amounts payable as provided hereunder shall be additional Obligations guaranteed hereby and secured by the other Collateral Documents. The provisions of this Section 4.03 shall remain operative and in full force and effect regardless of the termination of this Agreement or any other Loan Document, the consummation of the transactions contemplated hereby, the repayment of any of the Obligations, the invalidity or unenforceability of any term or provision of this Agreement or any other Loan Document, or any investigation made by or on behalf of the Administrative Agent or any other Secured Party. All amounts due under this Section 4.03 shall be payable within 20 Business Days of written demand therefor.

Section 4.04. Survival of Representations and Warranties. All representations and warranties made hereunder and in any other Loan Document or other document delivered pursuant hereto or thereto or in connection herewith or therewith shall survive the execution and delivery hereof and thereof.

Section 4.05. Counterparts; Effectiveness; Successors and Assigns; Several Agreement. This Agreement may be executed in one or more counterparts (and by different parties hereto in different counterparts), each of which shall constitute an original, but all of which together shall constitute a single contract. Delivery by facsimile or electronic transmission of an executed counterpart of a signature page to this Agreement shall be effective as delivery of an original executed counterpart of this Agreement. The Administrative Agent may also require that any such documents and signatures delivered by facsimile or electronic transmission be confirmed by a manually signed original thereof; provided that the failure to request or deliver the same shall not limit the effectiveness of any document or signature delivered by facsimile or electronic transmission. This Agreement shall become effective as to any Guaranty Party when a counterpart hereof executed on behalf of such Guaranty Party shall have been delivered to the Administrative Agent and a counterpart hereof shall have been executed on behalf of the Administrative Agent, and thereafter shall be binding upon such Guaranty Party and the Administrative Agent and their respective successors and assigns permitted thereby, and shall inure to the benefit of such Guaranty Party, the Administrative Agent and the other Secured Parties and their respective successors and assigns permitted thereby, except that no Guaranty Party shall have the right to assign or transfer its rights or obligations hereunder or any interest herein (and any such assignment or transfer shall be void) except as expressly contemplated by this Agreement or the other Loan Documents. This Agreement shall be construed as a separate agreement with respect to each Guaranty Party and may be amended, modified, supplemented, waived or released with respect to any Guaranty Party without the approval of any other Guaranty Party and without affecting the obligations of any other Guaranty Party hereunder.

Section 4.06. Severability. If any provision of this Agreement or the other Loan Documents is held to be illegal, invalid or unenforceable, (a) the legality, validity and enforceability of the remaining provisions of this Agreement and the

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other Loan Documents shall not be affected or impaired thereby and (b) the parties shall endeavor in good faith negotiations to replace the illegal, invalid or unenforceable provisions with valid provisions the economic effect of which comes as close as possible to that of the illegal, invalid or unenforceable provisions. The invalidity of a provision in a particular jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.

Section 4.07. Right of Set-off. Each Lender and its Affiliates and each L/C Issuer and its Affiliates shall have the set-off rights set forth in Section 10.09 of the Credit Agreement, without any requirement of prior notice to any Guarantor, any such notice being waived by each Guarantor (on its own behalf and on behalf of its Subsidiaries). Such rights are in addition to other rights and remedies (including other rights of setoff) that such Persons may have.

Section 4.08. Governing Law; Jurisdiction; Venue; Waiver of Jury Trial; Consent to Service of Process. (a) The terms of Sections 10.15 and 10.16 of the Credit Agreement with respect to governing law, submission of jurisdiction, venue and waiver of jury trial are incorporated herein by reference, mutatis mutandis, and the parties hereto agree to such terms.

(b) Each party to this Agreement irrevocably consents to service of process in the manner provided for notices in Section 4.01. Nothing in this Agreement will affect the right of any party to this Agreement to serve process in any other manner permitted by law.

Section 4.09. Headings. Article and Section headings used herein are for convenience of reference only, are not part of this Agreement and are not to affect the construction of, or to be taken into consideration in interpreting, this Agreement.

Section 4.10. Guaranty Absolute. To the fullest extent permitted by applicable law, all rights of the Administrative Agent hereunder and all obligations of each Guarantor hereunder shall be absolute and unconditional irrespective of (a) any lack of validity or enforceability of the Credit Agreement, any other Loan Document, any agreement with respect to any of the Obligations or any other agreement or instrument relating to any of the foregoing, (b) any change in the time, manner or place of payment of, or in any other term of, all or any of the Obligations, or any other amendment or waiver of or any consent to any departure from the Credit Agreement, any other Loan Document, or any other agreement or instrument, (c) any exchange, release or non-perfection of any Lien on other collateral, or any release or amendment or waiver of or consent under or departure from any guaranty securing or guaranteeing all or any of the Obligations or (d) any other circumstance that might otherwise constitute a defense available to, or a discharge of, any Guarantor in respect of the Obligations or this Agreement, other than the defense of payment in cash of the Obligations or termination of such Guarantor’s obligations hereunder as provided in Section 4.11.

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Section 4.11. Termination or Release. (a) This Agreement and the Guaranties made herein shall terminate with respect to all of the Guarantors, and the Guarantors shall automatically be released from their obligations hereunder, when (i) the Commitments have been terminated in full, (ii) all the outstanding Obligations (other than (x) obligations under Secured Hedge Agreements not yet due and payable, (y) Cash Management Obligations not yet due and payable and (z) contingent indemnification obligations not yet accrued and payable) have been paid in full and (iii) no Letter of Credit remains outstanding (unless the Outstanding Amount of the L/C Obligations related thereto has been Cash Collateralized or a backstop letter of credit reasonably satisfactory to the applicable L/C Issuer is in place).

(b) A Guarantor shall automatically be released from its obligations hereunder as provided in Section 9.11 of the Credit Agreement.

(c) In connection with any termination or release pursuant to paragraph (a) or (b) of this Section 4.11, the Administrative Agent shall promptly execute and deliver to any Guarantor, at such Guarantor’s expense, all documents that such Guarantor shall reasonably request to evidence such termination or release, in each case in accordance with the terms of Section 9.11 of the Credit Agreement. Any execution and delivery of documents pursuant to this Section 4.11 shall be without recourse to or warranty by the Administrative Agent.

(d) The Administrative Agent shall have no liability whatsoever to any Guarantor as a result of any release of any Guarantor by it as permitted (or which the Administrative Agent in good faith believes to be permitted) by this Section 4.11.

(e) Notwithstanding anything to the contrary set forth in this Agreement, each Cash Management Bank and each Hedge Bank, by the acceptance of the benefits under this Agreement hereby acknowledge and agree that (i) the Obligations of any Loan Party or any Restricted Subsidiary under any Secured Hedge Agreement and the Cash Management Obligations shall be guaranteed pursuant to this Agreement only to the extent that, and for so long as, the other Obligations are so guaranteed and (ii) any release of a Guarantor effected in the manner permitted by this Agreement shall not require the consent of any Hedge Bank or Cash Management Bank.

Section 4.12. Additional Guarantors. Each Material Domestic Subsidiary of the Borrower that is required to enter into this Agreement as a Guarantor pursuant to Section 6.11 of the Credit Agreement shall execute and deliver a Guaranty Supplement, and thereupon such Material Domestic Subsidiary shall become a Guarantor hereunder with the same force and effect as if originally named as a Guarantor herein. The execution and delivery of any such instrument shall not require the consent of any other Guaranty Party hereunder. The rights and obligations of each Guaranty Party hereunder shall remain in full force and

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effect notwithstanding the addition of any new Guaranty Party as a party to this Agreement.

Section 4.13. Limitation on Guaranteed Obligations. Each Subsidiary Guarantor and each Secured Party (by its acceptance of the benefits of this Agreement) hereby confirms that it is its intention that this Agreement not constitute a fraudulent transfer or conveyance for purposes of any Debtor Relief Laws (including the Bankruptcy Code, the Uniform Fraudulent Conveyance Act or any similar Federal, state or provincial law). To effectuate the foregoing intention, each Subsidiary Guarantor and each Secured Party (by its acceptance of the benefits of this Agreement) hereby irrevocably agrees that the Obligations owing by such Subsidiary Guarantor under this Agreement shall be limited to such maximum amount as will, after giving effect to such amount and all other (contingent or otherwise) liabilities of such Subsidiary Guarantor that are relevant under such Debtor Relief Laws and after giving effect to any rights to contribution and/or subrogation pursuant to any agreement or arising under applicable law providing for an equitable contribution and/or subrogation among such Subsidiary Guarantor and the other Guarantors, result in the Obligations of such Subsidiary Guarantor in respect of such maximum amount not constituting a fraudulent transfer or conveyance.

Section 4.14. Subordination, Etc. Notwithstanding any provision of this Agreement to the contrary, until such time as the Obligations (other than obligations under Secured Hedge Agreements and Cash Management Obligations) shall have been paid in full in cash, all rights of any Guarantor to indemnity, contribution or subrogation arising under applicable law or otherwise in favor of such Guarantor as against any other Loan Party as a result of a payment made by such Guarantor hereunder to satisfy in whole or in part an obligation owed to any Secured Party shall be fully subordinated to the payment in full in cash of the Obligations; provided that if any amount shall be paid to such Guarantor on account of such subrogation rights at any time prior to the payment in full of the Obligations and an Event of Default shall be continuing, such amount shall be held in trust for the benefit of the Secured Parties and shall forthwith be paid to the Administrative Agent to be credited and applied against the Obligations, whether matured or unmatured, in accordance with Section 4.02 of the Security Agreement. No failure on the part of the Borrower or any Guarantor to make any payments in respect of indemnity, contribution or subrogation rights or obligations required under applicable law or otherwise shall in any respect limit the obligations and liabilities of any Guarantor with respect to its obligations hereunder.

[Signatures on following page]

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IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement as of the day and year first above written.

[Signature Page to Guaranty Agreement]

[Signature Page to Guaranty Agreement]

[Signature Page to Guaranty ]