Somewhat unrelated, but - is it just me or do other people notice too, that whenever a major university publishes course materials online, the instructors there are normally very young? It wasn't like that a while ago, e.g. when Coursera started, or it is not like that if you look at older MIT videos.

Does it reflect university teachers getting younger? Or younger teachers tend to give more effort to putting everything online? Or did my perception change with age?

Personally, I learned programming when I was a kid by watching YouTube tutorials + reading random Internet sources. When helping build SHD, it was important to me that we "paid it forward" & made all our lab materials open for everyone to learn from.

Hopefully someone out there finds it useful!

From my experience at uni, it was the young teachers that cared. Older ones would go through motions, teaching us what was the state of programming 20-30 years ago ;)

Younger teachers get "out there" for the same class of reasons software developers today want to be more "out there" - website,twitter,etc - compared to the relatively quieter personal websites of the last generation.