YES - get the Kaplan book. Barron's DAT book is not very good, except for the PAT section. Kaplan is probably the best all around basic DAT book. You may also want to consider some additional resources like Schaum's outline of biology (Kaplan is a little weak on the bio section), Topscore (a set of practice exams on CD), and DAT Destroyer (lots of practice questions with detailed answers).