Topic: Some useful guides on tmux
I was going to write a howto for tmux, but then I found some really good guides elsewhere on the web. Tmux allows you to tile your terminal without using X. It can be really handy if you all of a sudden find yourself without a GUI for some reason. For example, you might have to administrate a headless server running a really old version of linux/unix. Memorizing all the keybinds or making your own is a really good idea, however, the most important keybind to remember is the one that lists all of the currently implemented keybinds. Just push ctrl+b, release it, then push shift+/ (or simply "?" if that makes it easier for you to remember).
Hawk Host Tmux Guide 1
Hawk Host Tmux Guide 2
Short Youtube video