kabttu, you will do fine. Study that Marine Corps study guide, review a little algebra/basic trig and physics. You will do good. Anybody correct me if I'm wrong, but I remember when I took the ASTB for the Navy way back, they only concerned with the math/verbal, mechanical comprehension part for non-aviation applicants. Brush up on some Naval history as well. That saved my butt big time on the test. Since your wanting to go crypto, those parts will be the important ones for you. Good luck to you!