I've seen people just simply buying the study materials in bookstores and do well on their own... Others need that special push to get them through the studying.
There's arguments on whether or not you should take Kaplan or TPR (The Princeton Review). You should check out what others have been saying in other forums.
I took Kaplan and the only thing I really appreciated about it was the library of practice materials they had for us to do. Other than that the instructors are usually just students who've performed extremely well in the MCAT, they make you pay tons of money, etc.... Kaplan review materials are usually sold in books stores.... I suggest looking for them in a bookstore and see what it's like. It's usually a really thick review book with all the subjects.... Have a looks see and see if it fits your taste for a review course. Visit a Kaplan center and ask to see practice materials and their inventory for their library (i.e. what they can offer to you as their student). If you still don't like it... then try and research TPR the same way....
I say, whatever floats your boat.... Maybe someone else can fill you in with TPR.
I'm not sure how much time you have, but you better get a move on before August starts rollin' along... Good luck to you!!! 😎