Learn ? I am as newb as it gets

But I have interest !
1st I want to improve/develop body repair skills. I have a # of project cars.
I love making something from nothing as well as customizing desires.
I've preped and painted lots of small parts, pulled a few dents, welded up some patch panels but never got "good" IMO
I just picked up an old lathe at a yard sale for 10 bucks and am currently
welding up sides for a utility trailer. (that tells you a little about my AHD.
Like alot of car guys, can't have too many projects
I see myself not so much building a car body (heck I'm 45 now) but maybe reshaping headlights/tailights small custom things like that. I do want to do it right.