Tabs

Create

Ctrl + b then c
Create a new tab.

Switch

Ctrl + b then 1
Switch to tab 1.

Panels

Split

Ctrl + b then %
Split screen vertically.

Ctrl + b then "
Split screen horizontally.

Resize

Ctrl + b + →
Resize current panel.

Focus

Ctrl + b then →
Change focus to right panel.

Navigate

Ctrl + b then [
Move your cursor up and down.

Sessions

List

tmux ls
List current existing sessions (alias for list-sessions).

Attach

Ctrl + b then d
Detach form session.

tmux attach -t 1
Attach to session 1.