I haver read PMBOK 2xs

Also read Rita's, Head First, And Andy Cowen How to Pass the PMP

I am in the process of re reading Rita's Process Chart.  I read Rita's book first and then I read all the others now as I am re reading Rita's again her process chart is confusing me after studing the PMbok Process Chart.  It seems to be very different.  Any advice on how to deciper it after memorizing the PMbok Chart?

I have taken the following Practice exams:

Head First (200) 82%

Exam Collection (200) 75%