C-h a (command name) - apropos commands
C-h f describe function
M-x (command) - way to enter in any command long-hand
C-_ - undo
(global-font-lock-mode t) - enable syntax highlighting
M-v - up a page
C-v - down a page
M-f, M-b - forward / backward a word
M-<, M-> - start / end of buffer
C-x r m set bookmark
C-x r b jump to bookmark
C-s - search forward
replace-string
replace-regexp