Emacs also has a lot of inbuit tools to help you understand what's going on under the hood.

- `info` lets you read the emacs manual

- `apropos` lets you search for various elisp symbols in the editor, so if you're looking for something vaguer than a direct function or command you can search via apropos.

- The in-built `describe` (though I use a fantastic package called `helpful`) lets you figure out what the definition of a given variable, function, or command is. You can even look at what command a given key binding calls.

- Claude does a great job at teaching details of the editing/programming model of emacs which helps if you'd rather not read through the entire emacs manual

Things like this make emacs a joy to hack on (until you're trying to debug some slightly annoying behavior or crufty event loop thing ;)