PM Zilla and other links helped a lot in preparation for my PMP exam, it is so tough but i managed to get through, as I passed PMP I would recommend to anyone who is interested in taking the PMP Exam."
Go thoroughly with PMBOK phrase by phrase - take short notes as possible
Read Head first 2 times - take short notes ( for quick refer)
Do PmZilla, Oliver, Crosswinds and PMPerfect questions
No hesitation, you will be passing the exam at first attempt - guaranteed