Some useful tmux key commands.

    Ctrc A digit	Move to that numbered window.
    Ctrl A arrow key	Move to the pane in that direction.
    Ctrl A n		Move to the next window.
    Ctrl A p		Move to the previous window.
    Ctrl A w		Choose the current window interactively.
    Ctrl A o		Move to the next pane.
    Ctrl A ;		Move to the previously selected pane.
    Ctrl A l		Move to the previously selected window.
    Ctrl A Ctrl o	Rotate panes"forwards".
    Ctrl A Alt  o	Rotate panes"backwards".
    Ctrl A z		Toggle zooming into the current pane.