I studied for three months straight to prepare for the PMP exam. I purchased the PM Prepcast because I was having trouble absorbing information purely from reading the PMBOK and another paper study guide. It was very helpful to have the combination! The PM Prepcast helped tie all the information I was readying together and provided a good alternative to taking an in person class. The best tip I can give future test takers is to always remember when you are studying that you have to adjust your thinking to think the way the PMBOK thinks. Answering questions in the way you would manage a project will not help you pass the exam.
Good luck to everyone studying!