I built a Heathkit color television with my father when I was a kid. I learned how to solder, and how to recognize a bunch of electronics components, how to (begin to) read my father's schematics, and a lot more.
We turned it on, made a few adjustments, and the thing worked beautifully.
It kept working for many years.
When my father built his Heathkit color television I was too young to give him hands-on help. I just sat at the table in my jammys studying him. With a Tareyton hanging out the corner of his mouth, cig smoke mixing with the lead solder smoke, I learned more watching him than in any school year at any level. The set included a remote control(!). When you operated the remote, you would see the massive channel knob turn with a big clunk. I remember him putting the fear of God in me when it came time to “degauss” the tube.