steska!
i've never heard of this website b4, I used the Kaplan resources and Jack Rudman (or Redman..something) book and it was pretty helpful. you'll find a lot of study materials out there. i found it useful to study alone and only with my books and materials around me, the OAT (as of today i dont know about the future) is strictly pencil and paper, so...dont get use to doing things online. unless you print out sample questions first and work on it by hand.
p.s like HF, im also selling my Kaplan OAT stuff, email me if you want to purchase it.