I took the LSAT about 5 years ago in Kawasaki when I was a study abroad student. To be honest, it was a bit nerve-wracking because of the long train ride from where I was living (was afraid I'd get lost and miss the test) and the room was filled with a bunch of weird guys taking the test who reminded me of a bunch of peacocks strutting around the room at each other.
I really liked the Logical Reasoning Bible and Kaplans' 180 series.
I didn't apply to JET after graduating 4 years ago and went straight to law school and it was a miserable and obnoxious experience. I stayed for a semester and cut my losses, and here I am.
I thought I really wanted to be a lawyer too.
So besides the LRB and those Kaplan books, my other advice is don't! Don't do it! Run away while you still have no school (or maybe a little) debt and keep your sanity!
If you do go ahead and take the test and apply, I wish you the best of luck!