As the syllabus is of General Ability Test, Caravan's G.K book by Ch. Najib Ahmad and PPSC past papers by the same publisher or by advanced publishers will fulfill the requirements to prepare for the post. Additionally, one should keep in mind the updated current affairs sections as there are included at least 7--8 questions in the test related to present Current Affairs. For this purpose, JWorldTimes' or other such magazines' Current Affairs section is a must to be read.

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"But screw your courage to the sticking place,
And we'll not fail." _Shakespeare, 'Macbeth')