Hi, I'm so confused when assigning fonts to my design because there are A LOT OF FONTS, out there!

Example when I type in OpenOffice, use GIMP, I'm overwhelmed with the LOTS of fonts out there, even when I was still in Windows.

Is there a tutorial where I can:

1. Remove All Pre-Installed Fonts?
2. Create or paste only the ones I want in /home/user/.fonts? or /usr/share/fonts/myfonts/ ?

If I can do this, I'll be faster and can only CHOOSE FONTS I Actually USE and NEED.

Thanks a lot.