I used to detail cars and run a detail shop,taught myself everthing and I'm very good at it.What I can tell you would be to find a dealership that has a detail shop,go fill out a app and tell the manager that you want to learn.Just a part time job if you want,you won't be detailng to much more like washing and waxing but get with a detailer and tell him you want to learn.Just an option,plus you'll make some extra cash while learning.