Once you have a program such as bitlord or Utorrent, which can be found to download for free here:
http://www.bitlord.com/
After that go on a torrent sharing site such as btjunkie.com. Then simply search for the file/s you are looking for. Once you have found them press the key which looks like an arrow and click "open". This should automatically start up your bitlord program and the files will be already downloading. Once they have finished downloading, just click "open containing folder" or a option similar.