I am taking the SAT's in October, what should I do to study well and get a good score?

SAT is easy, best studying is just to read the instructions so you don't have to do so on the day of the test. Maybe read some books on the writing portion, as that is far and away the most difficult portion of the test. If you are not so good at science you may review some of that too. Math and Verbal portions are very easy, don't worry about them, 2000 is easily attainable.