It also pre-configures a lot of applications to use Tor out the box, including web browser (TorBrowser), instant messaging, email, etc. Plus it implements some enhanced anonymity features like stream isolation. It's an excellent out of the box solution for beginners. The web site is here: https://tails.boum.org And a good guide on setting it up is here: http://dkn255hz262ypmii.onion/index.php?topic=114141.0