type help to get all commands with their explanation, and <command> help to get a more detailed description about it. Should be pretty self-explanatory 👍
as an aside for generate and improve, I run them with 1000 usually but you get pretty good results with 500 usually as well. You can run with more but it might start taking a while.
Also, if you have a vowel block in mind you want to use, pinning it and running improve can speed up your generation process by a lot. For example, if you know you want eu ao i you can pin these positions and run improve semimak <amount> (or any other layout with this vowel setup) to get about a 250% speed increase or something similar, just by pinning 5 keys.