Not sure what your use case is (or your environment), so the most general tip I can give is to keep a cheat sheet handy while you learn. Don't start one from scratch, though. Search online for cheat sheets for your use case and then adapt them.
Kung Linux yung environment mo, "man " is helpful kung walang relevant info from Google. Also, the "history" command. I think meron din siyang setting para mas maraming lines sa history mo yung ise-save niya.
I can only think of one: long acrylic fingernails. Not because I dislike the aesthetic, but because I can't imagine anyone doing anything well with their hands while wearing them.