Currently my SAT Writing is in the high 600s to the low 700. I usually miss the hard questions just because I have never seen the a question like that before. I know that all the study books talk about the rules, but they are all basic and don’t always apply to hard questions. Do you guys know any books that contain detailed grammar rules? I have tried the Barron’s SAT 2400, but even the rules in there were not enough. Also, how did you guys study for the idioms for this section? Do you guys know any detailed lists of idioms? Thanks!