A little bit about myself:
I just graduated Spring 2014 from a California public school (CSU) with a Business Administration-Entrepreneurship degree. My school gpa is a 3.447, however, I understand that LSAC calculates GPA differently so mine will be around a 3.25-3.3ish (Unfortunately failed a pass/no pass class).
As a result, I would like to score around a 165 on the LSAT this December! I have had limited exposure to LSAT content besides taking a section of LG/LR/LC un-timed*** Using the raw score out of 100/101 question, I estimate my "diagnostic" score to be around 153-155. Edit** By far, I do absolutely horrible on the LG section. But I read from this forum that LG tends to be the easier of the three to improve upon. Hope this applies to me as well.

Anyways, I just signed up for the December 2014 LSAT Exam. This leaves me a little less than five months to prepare for this bad boy. I plan on taking a prep course that runs late September-December. Until I start my prep course, what study book(s) do you recommend that I start on ASAP? I will be taking the next 5 months off from work as I just graduated from undergrad to focus solely on this test.