AS rate and Few advices

Hello everyone, Im gonna be leaving on Jan 03 2024, I just have some few questions for you guys, Does anybody of you know about AS? ( Aviation Support Equipment Technician) Is it good or bad? And About bootcamp, Are they allowing us to go to the rest room anytime? And Also about active duty, Am I allowed To study or get some credits while on active duty? Im so nervous right now, like Im a soft person and trying to be better. Btw I already know the Sailors creed, 11 General Orders, military alphabets and some of the military terms, anything else should I learn?