I taught myself how to work on bikes when I was in high school. My Dad bought me a Nishiki 10 speed to ride to high school complete with turkey levers and rat trap pedals. I decided to rebuild it. It took me one day to take it apart and over a week to overhaul it and put it back together.
Before rebuilding the bike, I picked up a copy of Richard's bike book and a small set of tools that came in a plastic zippered folder. It was a pretty complete set of tools but I've lost most of them over the years other than the metric wrenches. I remember reading in Richard's bike book that tools should at least be drop forged. These are Hozan drop forged wrenches and they still fit my hands better than any other wrenchs I've owned. Both the book and the tools are over 40 years old.
