<p>I was stupid this summer and I bought the princeton book, which is really useless. I have the blue book and the kaplan 2400. I don't want to waste any more money. Is there really a difference between it and Gruber's Complete Preparation for the New SAT and the Barron 2400? If so what exactly do those books provide that you found so useful.</p>
<p>oops posted in the wrong section. yeah i'm new.</p>