I have the SAT Blue Book, and I'm wondering if I should do the full practice tests or if I can just do sections. I don't have many opportunities to spend an extended period of time on practice testing. Will it matter if I do mostly individual sections when I study?
There's nothing wrong with doing some practice on individual sections, but you should still take a full practice test at least once every couple of weeks (assuming you have a few months to study). Since stamina, time pressure, and switching between topics are all big challenges of the SAT, it's important to see how you deal with them before you get to the real test. They could have more of an impact on your scores than you might think, and it would be a shame to end up with disappointing results because you didn't take these factors into account. Read this article for more info on how to use SAT practice tests effectively.