I tried giving Emacs a shot again recently because I now use windows at work and it's easier to get Emacs working on windows with all the features rather than trying to get vim/neovim with myriad of different outside plugins.
But I won't be switching simply because indentation in html/css/js files is off and apparently Emacs is bad at handling stuff like jsx and web stuff in general. Shame.
I wouldn't try to learn everything at once would just learn:
1) How to quit 2) How to save a file 3) Basic navigation: up, down, left, right, end of line, beginning of line 4) How to cut a line, and how to paste a line
Some of those you might already know from using bash or even basic text editing on macOS.