Here are a collection of books and related resources to help get more familiar with tests:

• New book: PMP Project Management Professional Exam Study Guide, Includes Audio CD, 5th Edition (Wiley).  As they say “This fifth edition is completely updated for the newest exam and is the most comprehensive review guide on the shelf. You’ll benefit from the detailed discussions on a wide range of PMP topics, concepts, and key terms-all of which cover the Project Management Process and Procedures.”  ( related Amazon link: PMP: Project Management Professional Exam Study Guide (Paperback))
• The Art of Project Management (Theory in Practice (O’Reilly)) (Paperback)
• Essential Managers: Project Management (Essential Managers Series) Paperback from DK Adult