Kaplan (medium), Collegeboard Sat book (easy), and Barrons(hard) are really great. I went from cover to cover of each book, and I did pretty well. (:
If you take Sat classes, you'll probably be well prepared. But you should always study on your own time too.
When you're at home, it's best to take practice tests and memorize vocab. Vocab should be done everyday, and practice tests once a week. I usually memorized 70 words per day. For vocab, I usually wrote out sentence, utilizing the particular word. Its tedious, yeah, but it worked for me.
Writing+math.. If you just practice solving loads of problems, you'll recognize a certain pattern. Reading is a bit more difficult to overcome, but you need to be careful and not think too much.
It's best to do all this over the summer or during a break, since you'll have a lot of time then.
That's all my advice for you guys, hahaha.
Good luck!