[Xuningshen]

You can't beat an extended family member or friend who loves working/restores cars. I learned from my uncle, and still learn things from him. He owned an automotive shop, I worked there for a couple years but he has since retired. In his retirement he is restoring some old chevys he had stashed away over the years. Watching and helping a friend work on their vehicle is the best way to learn in my opinion.

p.s. In my experience, its a lot easier if you're mechanically inclined. If you have more of an engineering, calculating (read: overthinking) mind it makes it harder.