I got a Campbell 4th ed. Biology textbook if anyone would like to buy it. (includes cd) And I also have the Kaplan DAT study blue book, 1001 questions for MCAT Chemisty, and 1001 questions for MCAT organic chemistry. Oh, and a Quantitative Chemistry textbook that really helped me on the Ksp problems...as well as others. It helped me score pretty good. Thanks