ssmiles08,
i bought the manhattan gmat series of books off of craigslist. i thoroughly reviewed all of the concepts in each of the verbal categories - reading comp, critical reasoning, sentence correction. i found the explanations of concepts very helpful, but i did not subscribe to their test-taking strategies, which involved keeping an ongoing outline of passages (RC), and paraphrasing sentences (CR). I found them too time consuming. I just made sure to maintain a laser-focus, and to read EVERY SINGLE WORD of every question carefully, while taking mental notes along the way. for instance,
-- while reading a passage, as i come across a main idea, i re-read it and take a mental note that that is a main idea.
-- as i read a critical reasoning argument, i take mental notes of which sentences are premises, which are conclusions, and i automatically try to find a whole in the argument.
-- and for sentence corrections, i read the question, and take mental notes of issues i find wrong with the underlined portions (subject-verb agreement, noun/pronoun, etc.). then i try to corroborate with the answer choices.
but the single piece of advice that helped me the most was: For EVERY SINGLE QUESTION, there is something identifiably wrong with FOUR answer choices. Find those mistakes, and eliminate those choices as fast as possible.
Hope that helps. Good luck!
