BitTorrent is a file-sharing protocol that enables us to download content directly from other groups of people. Unlike HTTP, the download speeds vary, because you are not receiving data from a dedicated server, instead you are downloading from other users’ computers. Now how to connect to other BitTorrent users to download files?
For this you have to just follow these steps ::

1. Get a BitTorrent client

First you need a BitTorrent client, a program that will enable you to connect to other users (or peers) and thereby download the files you want to. Popular clients are : Windows - uTorrent, Mac - Azureus, Linux - BitTorrent. Download and install the any one these clients.

2. Find a torrent

Now that you have a BitTorrent client installed, you will want to find torrents you like and download them. For that you have to visit a BitTorrent directory or use a BitTorrent search engine like Torrentz.

For example, open http://www.torrentz.com in your browser and search for anything (spiderman 3 for example). If you see something you like, click on one of the Download Locations and download the .torrent file from the site.

3. Start the download

Once downloaded, double-click the file and it will open and start downloading in your BitTorrent client. Some clients like Azureus will ask you to specify a location to save the file.