Emacs Commandments: the SEVEN Commands You Must Know
Thou shall know this concept: ① everything is a command. ② a command may have a keybinding.
Thou shall have met Adam and Eve:
execute-extended-command【Alt+x】 or 【▤ Menu】 (call a command by name)
keyboard-quit【Ctrl+g】 (cancel a command or key sequence)
Thou shall know thy brethren:
Thou shall then know thy siblings:
describe-char(useful for Unicode)
Then, know thou this:
apropos-command 【Ctrl+h a】 and
If you are not familiar with them, see: Tips on Long Term Emacs Productivity.
But when coding elisp or doing configuration, sometimes you have a value, and you want to know which variable possibly hold that value. The answer is:
apropos-value. I learned my way from: 〔who holds this value? By Dirk-Jan C Binnema. @ http://emacs-fu.blogspot.com/2012/06/who-holds-this-value.html〕
Go forth and memorize them, every last single one of them. Then, you shall beat Darth Vader.
or, buy something from Best Keyboard for Emacs