<p>Alright, so I got a 61 in Math on the PSAT, and I'm trying to find a good prep book before I take the test in the spring. </p>
<p>I have the Princeton Review book, which is nice for tips and hints, but what I really want is an in-depth review of the math concepts covered on the test. Someone told me Gruber's was good, but I really like to get several opinions before I buy something. Any suggestions?</p>