I pretty much agree with @Cumulus007
If you want GUI, use the ubuntu12.04 desktop instead, but not the server. Ubuntu server does not contain any graphical programs. Learning commands is very useful when you use linux though. When I was new to linux, I've never thought I can handle linux server at first glance. I thought this "box" is way smarter than me, and I still feel that way lol
However, since you have ubuntu server installed on your computer, you can get any type of GUI by installing xinit,openbox (tons of GUI are available in linux world, openbox is very minimum one), aterm (choose your favorite terminal program ex:gnome-terminal,terminator) ,and pcmanfm (light weight file manager)
login to your server
sudo apt-get update && sudo apt-get -y upgrade
// you may need to run this command if you haven't never run that before.
sudo apt-get install xinit openbox aterm
sudo init 6
// init 6 will reboot your computer
login to server again
now you can get very minimum GUI.
There will be nothing display other than mouse cursor, just right click on anywhere. You will see the minimum menu. when you open up file manager (pcmanfm) you gonna say, it's missing icons!
sudo apt-get install lxde-icon-theme
//this will install icons.
I still recommend Ubuntu12.04 desktop for you. Consider using that.