you just fouund yourself in the command line, not a good place for a newbie unless you want to learn linux terminal commands immediately. (type after the # free and that will show how much RAM and SWAP you are using. )My suggestion would be to download (for free, of course)Fedora (
http://fedora.redhat.com) or Mandrake or even buying Suse. These distros would be of greatest interest for you and make learning linux alot easier.