Why is it so hard to get good advice !!???
My father only fixed a car when he had to. He's a retired engineer that has dealt with everything from nuclear reactors to process modeling for machining to the masts on the America's Cup yachts. But as I've gotten older, I've realized that I'm glad he didn't teach me. It's not the fastest way to learn by doing (and making mistakes) but it certainly leads you to a really good place.