[Pamar]

I am from that era, so I might add something that perhaps is not obvious at all nowadays.

The microcomputer explosion gave birth to an large number of actual paper magazines and at least 50% of their content were... actual source listing you had to manually retype. Basic was already fragmented in a billion different flavors and dialects (especially if your program had any kind of graphics) so the more ambitious user could also try their hand at translating a listing from - say - TSR-80 to Apple Basic.

In any case you were directly exposed to the actual source code, and tweaking or experimenting with it felt very natural.