General notes: Don’t use more than 2-3 books to study (PMBOK included), they will confuse you and do more damage than good. There are a lot of books on the subject, go to a book store and randomly ready some of the material; you’ll notice that some of them are absorbed “better” than others – use them. Someone said that you should go through 3500 mock questions before taking the actual exam, sounds about right – not only you get exposed to the questions not covered in the books, you’ll get use to exam format.