C+b+c - create a new window
C+b+& - close a window
C+b+n - switch current window
C+b+NUMBER - switch to NUMBER window
C+b+% - split vertically
C+b+โ - split horizontally
C+b+ARROW - move between panes
C+b+: - go to command mode
:rename-window - rename a window
C+b+d - detach
tmux ls - show session list
tmux attach - restore session
C+b+s - show open session
:rename-session - rename a window