Modifier keys naming convention
|Alt||A||Relatively seldom used in Emacs, because Meta is often "logically" mapped to the "physical" Alt key.||A-x||Type "x" while holding down the (non-Meta) Alt key|
|Control||C||C-x C-f||While holding down Ctrl, type first "x" then "f". (This runs the command find-file).|
|Hyper||h||Often not mapped to any key (by default).||h-x||Type "x" while holding down hyper|
|Meta||M||Often mapped to Alt on your keyboard||M-x find-file RET||Either:
which activates the minibuffer, then type "find-file" in the minibuffer, then Return.
|Shift||S||S-x||Type "x" while holding down Shift|
|Super||s||Often not mapped to any key by default, or to Window or Menu if present||s-x||Type "x" while holding down super|
Printable cheat sheet for popular modes
Emacs ships with cheat sheets of common and useful key bindings. The pdf files are located in the refcards/ subdirectory of.
Editing key bindings
You can add, remove and change key bindings for any command, either globally or locally to a mode, interactively (and only for the current session) via M-x global-set-key and M-x local-set-key, or persistently using simple Emacs Lisp code in your Emacs configuration file which is loaded when Emacs first starts up.