I passed PMP exam today on May 19th. I prepared for it for good 3 months by using PMBOK (reviewed 2 times), Rita (reviewed 2 times), Whizlabs 4 tests, PM Study and Head First free tests. Notes from Rajesh Nair and Raga's 365 points were a huge help in the last few weeks of my preparation. Thanks to them for compiling those and PM Zilla for publishing the study material on thier site.