I know this post is from a while ago, but maybe my answer will help someone else....
Buy the Pearson practice exams. They are a very good representation of the exam; a lot of study guides really don't represent the verbal portion well. I agree with Kelp103, though. This is a tough section to study for if you don't already have a good vocabulary or aren't a big reader. If you score really high in your sciences and decently in math, they will pull up poor scores in Verbal. I got a 93 even though I TANKED my math portion of the exam (no Calculus class yet). Definitely concentrate more energy on Science and Math which are easiest to improve on. And I can't overstate the importance of buying the official Pearson practice exams. All the study guides and my own note revisions would not have helped me get the score I got without those practice exams.