Whenever I didn't know how to do something or suspected there'd be a far more efficient way to go about it, I'd look up the magic words or keys to use and write them down.

Limiting this cheatsheet to just one side of an A4 sheet kept it usable and forced me to rewrite it every so often - every next iteration leaving off all the commands I had been checking back often enough for that they had finally stuck.

Completely unsolicited, but hopefully useful advise nevertheless :)