For command line help, man pages are thorough. The information you want is probably in there somewhere. But I'd prefer a few examples to get me started. The tldr project does exactly that. So I translated their pages to gemtext, and put up a list of them.
=> tldr
No idea if this is useful to anyone (even me) but if it gets any use, I'll keep it there.
=> #tldr
=> back to gemlog This content has been proxied by September (3851b).Proxy Information
text/gemini;lang=en-GB