I'm ashamed to say I've been using Emacs since 1992 but I have never been able to impress into my brain anything other than the minimal set of keystrokes to do basic editing. I feel like I need to be trapped on an island where the only thing I could do was learn emacs for a bit. There's so much there to dig into.
This is why I regularly create hydras for every emacs mode that I use. That way I don't have to remember any extra keystrokes, as the hydras will remind me.
What's a hydra? (in this context)
A cluster of Emacs keybindings that share a common prefix, implemented using the hydra library: