How do I get the entire set of TBR books. Any reliable source/website?
The best place is their website. Their horrible, unprofessional looking website: http://www.berkeley-review.com/TBR/home-study.html
Another good place is to check the For Sale forum on here: http://forums.studentdoctor.net/forumdisplay.php?f=230
I took the Kaplan course and regretted paying the $2K for it. Here's what you should do (and the advice I ignored for months):
Do questions. Lots and lots of questions. Start with a topic you like, and ease back into studying. When you get back to questions you don't remember, don't like, didn't do too well on, go back and read the content. Research the content. And DEFINITELY go with TBR. SN2ed has a GREAT sticky on a 3-month and 4-month plan. It is a sound and tested plan, and I'd suggest using it.