The people who learnt to program computers in the 70s and 80s weren't taught at school by teachers, they taught themselves (maybe with help from friends).
It's still the truth these days. Of course, we don't have basic installed by default anymore. Instead, I have a desire to make video games and it took me several tries over my childhood until I started to program seriously at age 15.
It's still the truth these days. Of course, we don't have basic installed by default anymore. Instead, I have a desire to make video games and it took me several tries over my childhood until I started to program seriously at age 15.