I have been tutoring students for the SAT since I took it myself only 4 years ago, scoring a 2350.
I believe that it's better to learn test-taking strategies through one-on-one conversation. It is important to be able to find not just the correct answer, but the logic behind the question - the traps the author wanted you to fall into and how to avoid them. I approach standardized test tutoring from an engineers perspective: there are a few tools you need to be successful, and they aren't actually that hard to master. The tricky part is knowing when to use them.
University of Washington
Human Centered Design and Engineering
National Merit Scholar