Emacs tells you to hit "Ctrl-h" when you start it. The documentation for Emacs is about as good as you can get for a software product.
(Now let's talk about Excel if you want to discuss discoverability issues.)
(Now let's talk about Excel if you want to discuss discoverability issues.)
I agree it's very well documented, and I assume your impulse upon reading the previous paragraph is to tell me there's a REPL. it's simply not casually approachable. sorry. ask someone who isn't drowning in koolaid!