I just finished up for the summer at college and I am gearing up for my summer. I am going to shadow an optometrist part-time and study for my OAT that will be early August. So far I have the small 25 dollar Kaplan OAT review book that has the full 2 tests in it. In addition to that, I have the TopScore CD with the full tests. I feel like all I have is practice tests and no real study material. Does topscore offer answer explanations? What other types of material should I get? I feel like I should have a comprehensive subject book or something of the like. What other materials would you recommend specifically?