Yeah, it's really quite simple. You download small .torrent files. .torrent files contain the information necessary to find people who have the data for what you're trying to download. You have to load the .torrent file into a BitTorrent client software, which will then go out and make direct connections to those people to download all the pieces of the data that you need.
If you've already gotten uTorrent installed, just open up the .torrent file with it, and let it run for a while.
Maybe these videos will help too. Instead of Mininova or IsoHunt in the examples, you're using the RTSR Tracker to get your .torrent files.
http://www.metacafe.com/watch/772322..._use_utorrent/