I would like to disable my touchpad with i3. Previously I was using XFCE and I was using the GUI to do this. How can I do this in i3 too?
You could also use/install xinput.
It will give you a list of input devices, find your touchpad in the list and it's number = NUMOFDEV.
xinput set-prop NUMOFDEV "Device Enabled" 0
That should disable it.
An easy way to disable the Touchpad is to add
To your i3 configuration file. If you want to know where that file is run
i3-config-wizard. In addition to outputing where that file, if one doesn't exist, it'll create it you for you.