I found a thread that explained how to install the Adobe Source Code Pro font here: How to use the new Adobe Source Code Pro font?
I followed the instructions, logged out and logged back in, opened LibreOFfice Writer, and the font still wasn't available.
One thing I noticed that I don't understand is that the TTF and OTF fonts have .woff extensions. So the extensions are .otf.woff and .ttf.woff. I don't actually see any naked .otf or .ttf extensions. Just deleting the .woff out of the filename doesn't seem to fix anything.
Am I missing something fundamental? I'm a total Ubuntu newbie. Do I need to drag the entire folder for the ".fonts" folder to recognize it as a family?
 
     
    