in reply to (OT?): Operating Systems

A couple of comments:
this is a popular qn on, which I can recommend as a free help site for all things Linux.
Most Linux distros come with a GUI eg RH Fedora Core is popular, BUT, they all also come with the option to bring up x-terms or equiv, so you've always got the choice about how deep to go ie GUI vs CLI.
As an example, I actually work on an RH FC box, which is handy for browsing (FireFox), email (Thunderbird), but apart from them, I spend 90% of my time in multiple x-terms and can't even see the desktop underneath...