1. There is only one MCAT, not multiple
😀
2. Take all of the prereqs before preparing for and taking the MCAT (or at least be taking the classes at the same time).
3. Don't repeat courses, but you could sit in on a class if you think that might help.
4. Get a copy of the Exam Krackers, Princeton, and Kaplan comprehensive review books for the MCAT. Read them all, but skip their practice exams. Just read and study the material.
5. If you have a long commute or lots of down time in the car then buy the Exam Krackers Audio Osmosis and listen to it until you want to scream.
6. Pay the USD$200 or so to the AAMC (
http://www.aamc.org) to buy their complete set of old MCAT exams. Use Exam 3R, 4R, and 5R as a diagnostic, midterm, and final to measure your progress. Use the other exams to practice, practice, practice under simulated testing conditions that you will encounter on test day.
7. Exercise, eat well, be nice to your other premeds.