I don't think learning "content" is the best way to improve your score. I went into the MCAT basically having only taken Chem 1, 2 (B and C

), Orgo 1, 2 (bad and REALLY bad), and Physics 1, 2 (meh...). Although I am the black sheep of my community, ultimately a 30 was all I really needed. It tests more for "how" you think. Learning material and blind regurgitation without critical thinking will get you nowhere on the test. I'll be honest with you; a LOT of the MCAT can be answered correctly by very good guesswork. Except verbal... If there were an emoticon between sad and angry, I'd use it here.