There are plenty of free resources out there to help you study for the SAT’s.
Note: If the answer to a math question doesn’t make sense, Google it (SAT test 3 section 3 question 20). There are videos for at least the first 3 tests. Feel free to contact me, as well, with any questions that drive you crazy.
Note: The full length tests are the same ones listed above, but there are other great resources on Kahn Academy. Check out the SAT Tips and Strategies.
This video series is awesome – but it covers hard problems. If you are aiming for a 1300 or below they might freak you out. You should try them after you have done some studying.