I am very sure that this question has been covered countless times. Can anyone please share his or her success(how many hours a day/week/ etc)? I am planning to take MCAT within 3 years. I also own Berkekey Review and Princeton Review. which one is better? Should I study them both? I don't know if this is really true, but I also heard that Kaplan won't let students take its material or sth. Thanks for your insights!