- https://en.wikipedia.org/wiki/I3_(window_manager)
- https://www.maketecheasier.com/install-use-i3-window-manager-ubuntu/ – how do I get my Ubuntu to use i3 instead of Gnome?
- https://www.addictivetips.com/ubuntu-linux-tips/beginners-guide-i3-window-manager/ – also: which packages to install
- https://i3wm.org/docs/
- https://i3wm.org/docs/refcard.html
- https://i3wm.org/docs/userguide.html
- https://i3wm.org/docs/userguide.html#_default_keybindings
i3 is a minimalistic tiling window manager designed for X11 – it supports virtual desktops.