I have been reading a book recommended by my school, which is okay: Law School Without Fear (by the Shapos (first names escape me now). It can be boring and VERY basic sometimes, but it has helped to calm my nerves and I think I will actually use some of the advice. Also, I read Law School Confidential and it has some good suggestions for studying, briefing, etc.
I tried to do some CALI lessons online, but there's really no point, since I have no idea what they are talking about yet!!! But, as far as actual substantive reading on subjects, I tend to think others, like jeffislouie, have the right idea. It seems counterproductive.
BUT- I got an AP Prep book on economics and it is good stuff. It is kind of blah, but for a philosophy major, like me, it helps put a different spin on things. Also, I hear that economics is a good foundation to have for Torts, and that since economic issues underlie a lot of policy, it helps to be fresh with it.
Just a note- I spend a lot of time at the pool swimming, because much of the advice I've gotten suggests starting an exercise regime if you do not already have one!!!