Window and buffer commands

 
                             Window and buffer commands

C – x    0	Zero-window: deletes current window
C – x    2	Double-window: Splits current window into  two parts, allowing you to edit at two different locations in the same file or permitting you to view different files at the  same time.
C – x    b	Switch-to-buffer: display a different buffer on  the screen.
C – x    o	Other-window: Move the cursor to the other  window( Assuming that you have two   windows/buffers open at once
C – x    c – b	List-buffers: lists those buffers currently  loaded into emacs.