I've always been impressed with the threads on here about folks who buy older cars and get them running smoothly. I've done a handful of things with my own cars but nothing beyond oil, coolant, transmission fluid changes. And I always seem to make errors along the way, but luckily I haven't blown anything up yet.
For those of you that do your own wrenching, how did you learn? Family member? YouTube? Trial and error? Just interested in how people go about obtaining auto maintenance/repair knowledge.