I think there's this book...the bible? Ever hear of it. I used that a lot and a lot of prayer. No, the Kaplan book worked for me. There aren't a whole lot of books out there but I thought that one was the most comprehensive and it was easy to read. Plus, it had practice tests and a cd and neat little margin notes. I took the course but the book they gave me is pretty much the same as the one in the bookstores. You could use a MCAT book but you'd get shortchanged on the math and PAT but if you use it for sci only, that's good. I say the more the merrier if you can afford it.