yea, ubuntu is pretty cool, i dual boot ubuntu and windows 7...use win7 mostly for gaming and ubuntu for almost everything else.
When i first started using ubuntu, i had no idea what i was getting into...i tried that live cd, but i thought, "eh, what the hell", so i installed it, and once i figured it out, i fell in love :D
ubuntuforums.org is what got me through all of my troubles...the people there are VERY helpful, so dont hesitate to ask questions on there, even if you think the questions may be dumb...it's not...linux is a pretty scary thing for people who don't know about it, but ubuntu was a pretty easy transition.
also, if you ever plan on maybe installing it on a laptop, make sure that you plug the laptop DIRECTLY to the internet's ethernet cord... when you first install it on the computer, it's probably not going to recognize some components like the wifi card, or the volume button, or the video card, or things like that, but once you have the ethernet plugged in, and an internet connection, you can just update some stuff and...voila, they work now :D