I've always loved maths and been good at it, so that helped. The biggest thing for me was I got myself lots of practice for the MCT (Maths), RCT (Reading) and MST (Physics).
http://www.nelnetsolutions.com/pdf/free/mastermilitaryflight.pdf (This guide here is A1)
The Complete ASTB Study Guide, blue book on Amazon (too easy, but still good practice familiarizing my self with test questions)
ASTB Study Guide 2018 by Test Prep Book, red on Amazon (really good, challenging problems)
I know the ANIT is not on the OAR but I studied
Study Flashcards On ASTB Aviation/Nautical Information Test (ANIT) [comprehensive] at Cram.com. Quickly memorize the terms, phrases and much more. Cram.com makes it easy to get the grade you want!
www.cram.com
Study Identify the Following Flight Control Surfaces Flashcards Flashcards at ProProfs - IE or Firefox are the preferred browsers. For each question, select the option that is most nearly correct.If you answer the questions in order: the ASTB Study Supplement Book Section 6 starts from...
www.proprofs.com
You didn't ask about my flight sections, but I know if I had used the compass method for the UAV test my FOAR would have been up.
If I had been more relaxed with the listening and flight simulator I would have gotten better pilot scores. I tried so hard to keep my target on the plane so it would be green, but it just shot out so fast right after. Your best bet would be to not touch the plane keeping your target red but stay close to it, that way the plane moves slower and it's a hell of a lot easier to track. I wish I would've done that, probably would have got 9s that way.
Oh yeah, obviously right down the emergency instructions for the last test!!