For me it started out as phases. This all depends on how well your background is of course. I started reviewing the basic sciences and everything in the kaplan review book to cover all the stuff that i needed to know. THose has questions at the end of the chapter. Once my actual studying phase was over i started doing kaplan subject tests for each of the science sections. Taking good notes was key in one notebook to go back on. Then i started with destroyer. This was straight up questions after questions all day as much as i could do. Here is where i found my weakneses and strenghts. The topics i didn't understand from these questions i went back on and mastered. I used regular destroyer and math destroyer. But make sure you have a basic understanding of both subjects before starting each of them. Along with this i used Crack dat pat which you have to do as much as you can everyday make it a routine. And finalize with Topscore to get used to the computer format and timing. Good luck