"The Official LSAT SuperPrep" is a good way to learn about the test and the strategies for solving the puzzles. The analytical reasoning sections will chew up all your time if you don't learn the templates for the different types of problems; learn how to sketch them out quickly and solve them.
Then you just need to practice, practice, practice so that you can do them quickly.
So I would find several volumes of "10 Actual, Official LSAT PrepTests" and start working through them. Perhaps work through a test each night under timed conditions. Identify the types of puzzles that slow you down and develop a strategy to improve your time.
For the "logical reasoning" sections, the best advice I can give is don't jump to conclusions. The answer is straightforward if you just read the text of the question. If you can't draw a conclusion from the text, then that's not the correct answer! They're not trick questions; don't overthink them.
I am not a lawyer, but I did think about going into patent law and I took the LSAT.