1. Download the fonts and extract the zip/tar.gz
e.g. tar -xzvf FooFonts.tar.gz
2. Copy them to the fonts directory (/usr/share/fonts)
cp -r FooFonts /usr/share/fonts
3. cd /usr/share/fonts/FooFonts
4. Create fonts.scale and fonts.dir files
mkfontscale
mkfontdir
fc-cache
5. restart gdm (xserver)
/etc/init.d/gdm restart

