Actually, one of the most interesting “training-grounds” for people to learn how stuff works, is the game “modding” scene.
I used to be really into the GTA (Grand-theft Auto) series — drive around, kill folks, blow shit up — you know, good clean American-style fun

Anyway, one of the things that interested me was the fact that people were basically creating what amounted to completely new games by way of tweaking various internal config files, event scripting, etc.

The cool part is: in doing so, they were not only learning about how the particular game was put together, but they were also learning a lot about how their operating system related to the game/video card/etc.

I don’t think the DIY (do it yourself) has ever really been popular with “professionals”, because they see it as a threat.
I mean, come on — do you think tech-support guys really WANT people to be computer-savvy? Where’s the social leverage in THAT?

Mass literacy was damaging to “professional” scribes, as another example.)