@rl_dane
We learn our whole life
I'm going to start with my beloved Vim.
Bram Molenaar has setup Vim in such a way, that you may use, only use what you need, learn by accessing and processing the necessary commands in the Local help file & work in that manner for even years.
Every time you need to learn something else in Vim, you just go in that same local help file.
Vim help was set up in such a beautiful way, you can learn as you go...
It's quite clear that there will be a lot of TIL when using Vim
Complex systems like the Fediverse are also designed in that way you learn just what you need and then when you stumble upon something, you go on help
It's a beautiful thing when help and program are tuned towards each other