BitTorrent is not a program. It's a method of downloading files using a distributed peer-to-peer file sharing system. The programs that you use to download files via the BitTorrent protocol are called BitTorrent. It's not difficult to use, it's just different. As soon as you forget about your old file-sharing program (and you will once you start using BT), the easier it will be to start .
How to find and download a file with BitTorrent
First you need to download a BitTorrent client (the program that manages your BitTorrent downloads). I'd recommend:
Search for a good torrent.
There are a handful of really good web sites for downloading torrents (that's right, you search for torrents on the internet). The sites I'd recommend (in no particular order) are:
Try out whichever one you like. One might fit your tastes better than another, but I've had good experiences with all of these. From this point, search the site using their search box like you're using Google—just type in the name of what you're looking for. You'll likely get several results, but you want to choose the torrent with the highest number of seeders (indicated in most BitTorrent search results under a field labeled 'S'). Seeders are people who have already downloaded and are sharing the entire file. The more seeders, the faster your download will be. Some sites also provide you with a health meter, which is generally a measure of seeders vs. active downloaders.
Download the torrent.Once you've found a good and healthy torrent, find the download link and download the torrent. Your browser will ask you what you want to do with the file, so be sure to tell it to open the torrent in the BitTorrent client you downloaded above.
Your BitTorrent client will open and (possibly) ask you where you want to save the file(s). Pick your save location, hit OK, and that's it; your file will begin downloading. If you're not impressed with the speed at first, be patient. It can sometimes take a minute or two before the download ramps up to full speed. If you're still not happy, try searching for another torrent with more seeders. Thats it..!!!!!