I studied starting around 4/15, 2009, every weekend, but weekday evenings I am too tired because of working full time, but try to review in between.

I used three books

 Andy Crowe's how to pass PMP on first time, this wil provide a good foundation.

Rita's book, however, goes more into how the processes interact with each other and she has exercises to help you with knowing what comes next.

and I used the PMBOK