emacs simple usage

emacs.howto

C-x C-f - find file
C-x C-s - save
C-x C-w - save as
C-x C-c - exit

Navigation

M-f M-b - forward/backword 1 word
C-n C-p - next line , prev line
C-a C-e - begining of line , end of line
•Beginning of file: M-<
•End of file: M->
C-v - move next page
M-v - move previous page

C-x C-b - buffers list
k set buffer to kill
x execute

C-M-a C-M-e - begining-of-defun end-of-defun
C-s - search
C-r - search backward

Window

C-x 0
Get rid of the selected window (delete-window). That is a zero.
C-x o next window
C-x 2 - split horizontally
C-x 3 - split vertically

Bookmarks

C-x r l  list bookmarks
C-x r m  make bookmark

C-x u Undo