Retook the ASTB yesterday after not being Pro-Rec'd. I actually felt worse the OAR, despite getting a better score. I'll mention some stuff I saw on the test and a few things that potentially helped me out. 65 8/8/7
Math Skills Test
A lot of word problems on rates/averages/percentages and couple on fractional exponents. I also got a question on writing a number in binary, as has been mentioned before. In this case, however, it told me to write out the number, assuming base 4 instead of base 2. Not entirely sure if I got it right, but, if I did, I have the previous user who mentioned it, as well as Khan Academy, to thank for that.
Reading Comprehension Test
This was mostly military regulations for me. I actually ran out of time on this portion. I feel that having spent the past couple of years reading scientific publications helped me out on this portion. The military passages seemed akin to trying to read through methods and results sections, very dry and very boring. Of course though, I have no way of verifying that I improved in this section specifically.
Mechanical Comprehension Test
A ton of mechanics (pulleys, levers, etc). What really threw me off though was a question asking something about increasing the power of a nuclear reactor (?). Answers involved pulling or pushing a rod to increase or decrease the levels of protons/electrons/neutrons. I can't recall exactly what the question or responses were. I have no knowledge of the workings of a nuclear reactor so I took a wild guess on this one.
ANIT
To study, I searched extensively through these forums to collect any information I could find. If you have no previous piloting experience like me, the FAA handbook is also a must. If you have trouble reading through, or are more of a visual learner, I recommend checking out this youtube channel first:
https://www.youtube.com/user/pilottrainingsystem
Their videos go through each chapter in the Pilot handbook. Makes it easier to go back and read the actual handbook if needed.
UAV
TBAS flashcards were helpful. I still sucked at this though.
NAFTI
"Are you incompentent or irresponsible?" x 99
PBM
I don't have or play any flight sims. I do play CS:GO. I reversed the mouse in the settings a few weeks before (inverted y-axis, normal x-axis) and felt that it helped me get used to the inverted throttle. Additionally, because it is a first person online shooter, it also felt like it helped me a bit with the random, sometimes jerky movement you encounter on the PBM. You can be skeptical but, if you have the bit of free time, no harm in getting a bit of extra "studying" in. It also really helped to have taken the test before and known how much it actually sucks.
Lastly, I have been lurking for about two years now and want to thank everyone who contributes to these forums. All the resources that have been posted on this website are incredibly helpful.