Efiko,you are very much right that CPR covers most of the topics asked in FPGEE and the remaining gap can be filled by various resources like college notes,Remington, internet etc. My advice will be don't concentrate only on reading a lot of stuffs but also see how much you remember,so try to practice lot of questions.As mentioned above you can use fpgee quizes from chasenaplex.com or pre-fpgee,both are really good.