I knew many of these tricks, but learned many new tricks I didn't know and looks very useful (like you can do Ctrl-Y after an Ctrl-U, the 'reset' or 'disown' thing).

Regarding experience, I'm also struck by how many "experienced" engineers are just clueless with the keyboard.

I think the keybinding suggestions are really nice. My shell is configured by default such that Alt+Left and Alt+Right move by a word, but having things that work out of the box, basically always, is really useful whenever I need to do things inside a docker container