Oh God another engineer...we're doomed! DOOOOOOOOMMMED!
At least I assume that's what you mean by PE exam...I can't imagine studying for PhysEd heh. But then I don't know why people study for the Professional Engineer exam either (other than knowing what book the information you need is in)...you really either know it or you don't by that point. Same thing goes for the EIT/FE/whatever they're calling it these days.