You can study for the PSAT the exact same way you study for the SAT!
The PSAT is just a shorter, slightly easier version of the SAT without the essay. It tests precisely the same material, the format is nearly identical, and the difficulty level is almost exactly the same.
Therefore, if you want the best possible PSAT score, you should simply prep for the SAT. Not only will you kill two birds with one stone (you’ll be ready for the SAT much sooner, and can take it at or around the same time as the PSAT if you’re ready to do so), but you’ll also be setting yourself up for greater success on the PSAT. In addition, you will increase your chances of positioning yourself well for National Merit Scholarship success, something many high school students are interested in pursuing.