Open up the terminal
Create a folder in /usr/local/share/fonts/truetype
$sudo mkdir myfonts
then copy all ttf files in myfonts directory
$sudo cp /home/verman/Desktop/myfonts/*.ttf .
In order to install the font, ownership has to belong to root,so type
$sudo chown root.root *.ttf
after that type
which makes a directory for your fonts.
Now your font is installed, but it will dissappear the next time ubuntu starts up, so you just need to type
Note : fc-cache uses each directory in the current font configuration.
*You can start using your fonts in openoffice,Gimp etc.