http://eztv.it/ - it has all the US shows, (and a lot of Canadian, British and Australian ones) the morning after. I've been using this site for over a year it's very reliable. No joining required, just click on the episode and the torrent will download. Sites for other than TV shows: www.mininova.org, www.thepiratebay.org.
You should be careful of just googling stuff because there are a lot of torrents and programs created by anti-piracy outfits out there - either malware or duds that simply don't work so that you will give up on the whole bit torrent thing.