Okay, so the new PCAT book has some changes from the 2007 one (obviously). In the bio section, it combined some sections from the previous book. The General Chemistry section was also shortened, which was good, since now the book is even more concise. The problem lies in the Organic Chemistry section. There is none. The folks at Kaplan somehow combined all of the o-chem of the 2007 edition into ONE chapter, which is crammed into the General Chemistry Section. And that chapter is utter crap. It doesn't even teach you how to name compounds. All it does is talk about orbitals, give a basic definition to some functional groups, and tell you what a carbohydrates and amino acids are (like you don't already know). What I'm trying to say is to supplement with the 2008 book with the 2007 book (or earlier) when you get to O-chem. Please, for your sake, DO NOT just look at this o-chem chapter and think you'll do fine on the PCAT. Just a heads up.