Doc3232, I studied for about a month, on and off, going over destroyer and some kaplan practice tests in the blue book. BB is useless, you need Campbell for bio if you need to go deep. I did not study for bio much since I am a bio major and have 2 B's only... spend my time going over orgo and chem... used the ACS study guiedes I purchased at my school... All I can say is that I scored 17 on EVERY section of the 2nd Achiever test on Monday, 7/21... Almost rescheduled my test date, and go figure, Today I got AA 23... I would say know your basic consepts to a point when you can write essays about them. Keep reading your notes from your classes, I used my physiology notes and felt very well prepared... If you can, buy Destroyer from Orgoman, that thing is the BEST for g&o-chems, that's all I can say...