I surfed to this website tonight LearnCameraRepair.com and thought others would be interested, and I hope there are some interested people because we need more good camera technicians!
Online camera repair course, free tutorials, and the largest online library of free service manuals for photographic equipment. Learn Camera Repair is the place to learn to repair cameras!
This seems to be an amazing site with about a dozen downloadable lessons in pdf form and even chapter quizzes that you can take. The site includes links to sources for camera tools, copies of older repair trade magazines, and other resources. Started by retired camera technician Gene Pate who had more than 40 years experience repairing cameras.
I only wish I had time to go through all the training myself, but maybe some day!