I have taken the OCS test twice, both times I used the study guide you can get at the bookstore and it sucked, there was nothing to prepare me for the test in that book either time. Either Im taking an outdated test, or this book is just bogus. Is there any advice out there, any better study guides you would recomend. I cant rember the exact name of the book but it is written by some australian airforce guy with a weird name!