If you needed parts for a homework assignment, the only store that had them was Radio Shack (yes, they actually sold lots of electronic parts back then). So one day, I meandered into The Shack to get a resistor I needed. Lo and behold, there was a new manager, a guy named Tony. This guy was much friendlier than the previous manager had been. That other manager just tried to get us in and out, apparently presuming we wanted to shoplift or something.
This new guy? Happy to show me the new TRS-80, and though my parents wouldn't pay for one, he scarcely complained as I went back to use it every day for more than a year. I taught myself how to code on that machine, and so I have that freshman electronics class to thank, in part, for my career.