I don't want to scare you, but Kaplan and TPR really go above and beyond teaching the material they need to teach you. This is just my opinion, and also probably represents what others on this forum may feel. If you are doing Kaplan, please take my advice and DO NOT sit with pen and paper to takes intensive notes on every page of their book. Their lessons are simply too long for that. I made this mistake the last time I took Kaplan. I have pages and pages of color coded notes from all my Kaplan chapters--and you know what I got out of it? Nothing, besides my own organizational review. I personally feel that you can accomplish a lot by simply reading over the material and highlighting all the important points and only noting what's important on paper. You will have to use a LOT of discretion while doing notes because otherwise, you will end up writing a book for yourself and will not have done enough practise questions.
Do not make the same mistakes I did. I hope you really take my advice.
Also, I have heard that ExamKrackers has Audio Osmosis (never tried it, but have heard tons of great stuff about it) which really drills in the concepts through CD. I personally am going to get one of those Audio CD sets, because hey....the more modalities you have in learning your material the better, right? If I were you, I'd start with reading the chapters NOW and possibly getting AO for cheap on Ebay or Amazon. It's a bit pricey (esp considering you've already splurged for Kaplan) but it may just be worth the money in drilling the concepts.
One last thing: last year before Kaplan, I had started studying almost 3 weeks before class started. I had the longest length of class...we had only ONE lecture per week. And for each of those lectures, they would ask us to read an average of 4-5 chapters. That felt like a lot for me because I was doing other things on the side, I barely felt like i could keep up. I really felt bad for the kids who had 2 or 3 lectures per week...how in the world they reviewed 10 chapters per week, I had no idea. If you have one of those shorter classes, I would really urge you to start studying soon because once classes roll around, it's like pulling teeth to keep up with their fast pace.
Kaplan is great, but you should be willing to put a LOT into it to get some out of it.
Good luck and PM me if you have questions etc.