I keep seeing places refer to the "multiverse" repository as a place I can get software, how can I enable this repository? Please specify how to do this graphically and via command line.
The Multiverse repository contains packages (software) that is "not free" , referring to licensing restrictions.
For additional information on the philosophy of the ubuntu repositories, see Overview of the default Ubuntu software repositories
You can enable the repository from the command line or graphically.
Open Software center, navigate to the "Ubuntu software" tab at the top, select (check off) multiverse.
Use the "Reload" button to update your package list.
Uncomment (remove the # from the front of) the
Save your edit (if you are using nano, Ctrl+X , then type Y to save your changes) then, to update you r package list, run
Another option available for newer releases of Ubuntu:
From the man page:
From the command line without using a text editor or GUI: