Hello,
I just took the ASTB today 21 Jan and received a 49 5/6/6. Even though my scores are not the highest, I am happy with the results as I only studied for like 3 weeks and need a 4/6/6 for Marine Corps Aviation program.
Math Section
I recommend taking ASVAB practice tests to see what areas you need improvement on. Yes, the ASTB math section is harder however, this will allow for you to know your weak areas. Watch videos on how to actually do them.
Learn about areas, averages, division with large numbers, circumference, drt, time problems
Reading Section
Two out of the four answers will seem correct. Go with the one that actually comes from the text, word by word.
Mechanical Section
Kyles study guide is more than enough for this section. Know about your simple machines and electrical terminology.
ANIT Section
Study Kyles study guide until you completely know it all. Watch videos on how the aerodynamic of aircrafts works, the lighting/markways of taxiways and runways, 5 Major components of an airplane and (rolling, pitch, yaw). There are some questions that weren't in the study guide but if you study it and apply common sense, then you can break it down to the more obvious choice.
NAFTI
This section is annoying. Just answer to what you believe is best. I recommend choosing answers that will make you seem unselfish and that you will follow orders.
PBM
Spacial orientation aptitude- study the flashcards and the compass trick, it will work. Keep your finger off the mouse, panicking might make you click an answer without wanting. I got two wrong by accidentally clicking the mouse.
Dichotic listening aptitude- I recommend removing the headset from the ear that you do not need to listen to. That way you don't listen to unnecessary numbers/letters that'll confuse you.
Stick and throttle- when doing them separate, try your best to keep the aim point on the aircraft. When doing both stick and throttle, focus more on the one with the throttle as it is easier to track and keep the one with the stick on your peripheral.
When you do dichotic listening, stick, and throttle, I recommend to focus on the one with the throttle and the listening. It is better to perfect 2 instead of struggling to do all three at the same time. You can easily do the throttle and listening at the same time.
My scores are not the highest however, I think that they are great with the amount that I studied. The above is a recommendation that I believe would definitely help.
Lastly, do not get bummed out thinking that you aren't performing to well. You will do better than you think you are!