I signed an NDA, so I'm not telling you what's in the VCP 4 exam. Here are some quick hints though: read the blueprint. It's a great guide to the content of the exam (funnily enough!). And get this document bundle - most of the questions can be answered by knowing this documentation intimately. Perhaps I should share my revision notes too at some point...? :-) (I got 481/500 by the way.)