I'm a little confused about the aamc practice exams; I know the last couple can be purchased at e-mcat.com? but when you purchase it, it is like you get some sort of log in info and when you want to take the exam, you have to log in and take it? Also, how many exams are out total by the aamc (practice exams I mean)? can the paper forms (from before) also be purchased? how do you get those? thanks!!