Took the exam yesterday and passed it!! Here is my lesson learned for how i achieved this.
I read the PMBOK guide ( yeah i know its boring but you gotta do it!)
Then i watched the Prep-cast videos. Watch the overview videos 1st to get a genernal idea
Took an practice exam on the pm-exam simulator, when you get your results, you would know which areas you have a strong understanding in and your weak points.
Identify your weak area, and watch the detailed video on that area then take some quizzes
then its just rinse and repeat, I took the exams 7 times.
My intital mistake was thinking the exam was going to be like "what is a project?" but thats wrong, The exam tests how you apply the knowledge, which it was a big part of studying is taking A LOT of questions.
Hope this helps!!