My dad is also an auto technician, and he is one of the best in our area. If he can’t fix something, then there is no future for that car. He tells to me some details of his job. Because I also want to become an auto technician and to become as good as he is. However, each year new cars appear on the market, and I feel that my knowledge needs some upgrade. I found some online programs for auto technicians on https://www.becomeopedia.com/auto-technician/
It is quite convenient because I can continue working during my studies.