Its great to see that you're loving Ubuntu, but Unity may not be the best desktop Linux has to offer. Check out http://distrowatch.com
and explore the millions of different options and customizations! Different desktops like Gnome 3, KDE 4, Xfce, and tons of other desktops. Use the filters to find the perfect distro for you! (I believe LXF155 had a Beginners Section. If you're a subscriber, check it out right up theer in the archives section!) Welcome to the forums!