I don’t like memorizing a whole lot of emacs keyboard short cuts. I use smex mode, which allows me to type M-x and then the function name. I prefer that for the new commands that I learn. I will still use C-d to delete a character; doing M-x delete-char is pretty silly.
Here is a list of the functions that I use.
??,default,C-g,keyboard-quit (If you pressed a command by mistake\, ~~this will undo it)
You can find these by typing M-x describe-key and then doing the key sequence.