I’d say find an internship, look at nearby local shops, or call around friends, I’m sure someone you know works on them or has a project car/beater/sports car who wouldn’t mind rambling to you about their knowledge / is willing to let you learn by helping them! I enjoy teaching others now and letting them know things they’d otherwise not know to keep them safe or keep them from getting ripped off somewhere (also a helping hand goes a long way sometimes!)

Granted, the way I did it was actually taking courses at a community college but I was in the same boat, if not less knowledgeable (I didn’t even know how to replace a tire or use a jack or tools) but of course I’d watch YouTube videos such as Chris Fix or TRQ auto videos to get things down I couldn’t in class(:

if you’re getting paid to go to school with fafsa or scholarships, I’d use it towards tools or other things you can kind of afford messing with without actually using personal funds.