Ctrl-b then something
c - create new window
w - choose window
0,1,2 etc - choose window 0 etc
, - rename
“ - split vertically
% - split horizonatally
o - next pane
arrows - change pane
d detach
tmux ls
tmux rename-session
tmux new -s session_name
Can attach to a session rather than start a new one.
tmux attach
tmux kill-session
can preserve sessions over reboots?