<p>Instead of just doing Blue Book, start by learning the specific skills if you’re getting under a 650 on any section. For example, Barron’s lays out the foundations for the Math and Writing Sections very well, so doing all the exercises in those should at least get your score into the high 600s. Reading is harder and is the one case where starting on the blue book immediately is the best idea. I’d recommend memorizing vocabulary from Direct Hits or another vocab book and simultaneously using the blue book for reading passages. The problem with just using the blue book with math or writing is that you will get many types of problems, mess them up, learn the write way, and then forget it because you don’t get enough focused practice on it. The blue book is best once you’ve gotten the hang of all the major skills and just need to look for little things that throw you off.</p>
<p>I’m not saying lots of practice tests are bad, I’m just saying to at least supplement them with some books that focus on specific skills with sections and lessons. I hope that helps!</p>