Didn't take class, but got materials from a friend along with exam krackers. I structured myself by reading and grazing the material at first getting a general idea to each theme. I then went back and got to the nitty gritty learning (or recalling most of the time) formulas, while applying introduced shortcuts and also refreshing the theory of everything. A third trip back through it all, this time as a slow pace compared to the first time, cemented everything.
I did it at my own pace, and finished all materials in about three weeks, spending most evenings studying until exaustion set in, being sometimes 1 hour or 5 hours depending on the day.
I had a diagnostic score of 29 (10BS 9PS 10VS) and now i am doing significantly better as my last AAMC CBT was a 37 (14BS 12PS 11VS)