I took the mcat twice before and had a 23 both times. I did take a princeton review course, but i can't afford another course like that again. Right now, i'm studying for the mcat for this august just in case i dont get pulled off the waitlist this year. I bought that Kaplan MCAT Premier book from borders and i'm using my old mcat study materials. Do you think that this is enough to prepare? i do have a PR science work book with about 1/2 of the problems that i haven't worked on yet. i'm specifically also looking to improve physical science and verbal...any advice? thanks!