The interfaces for the various programmes aren't significantly different. The idea of a Live Disc is to allow you to try out how it feels without being stuck with the system permenantly on your drive (remember, though, Live Discs have speed limitations: hard drives are faster than CDs and DVDs)
Screenshots in case download a CD/DVD image isn't an option:
The learning curve isn't that steep. If you sat down and focused for a just a few hours (maybe 2-4) with the Ubuntu for Windows users book, you could probably learn very quickly. You'll get out of it what you put into it.
I'd be happy to be on standby for most unix (linux) related questions, and I know Aron has a preference for Ubuntu as well as two other people on this site, while I prefer it's mommy, Debian (in fact, it's the mommy of most desktop commercial Linux distributions). Though the site is geek-based, it has the same potential for answers as any linux-based site. A review of many of the articles would suggest a strong pro-linux lovin' attitude here (which NB,Aron: the articles could go for a better tree-ified categorised view).