What is a torrent?
Torrents are specialized files utilized in peer-to-peer (P2P) network environments. P2P is a network of personal computers that communicate with one another by running proprietary P2P software. The first P2P software designed to utilize torrents was BitTorrent by Bram Cohen. Other torrent clients have followed and include:
μTorrent - Azureus - Deluge - Yet ABC - BitComet - Bit Tornado -
Shareaza
BitTorrent (often abbreviated as BT) is a peer-to-peer (P2P) protocol (a description and set of rules on how to do things) , designed to distribute data in such a way that the original distributor would be able to decrease bandwidth usage while still being able to reach at least the same amount of people. Cohen's idea was to "break" the file being transferred into smaller segments called pieces. To save bandwidth, each person downloading (more commonly referred to as peers in the BitTorrent community) would have the pieces that they acquired available for upload to other peers in the swarm (the entire network of people connected to a single torrent). In this way, much of the load of sharing the file to every peer interested in it is offloaded to the peers. Note that a seed is basically a peer with every piece, so when a peer successfully attains all data in the torrent contents, that peer becomes a seed as well.
You need to first download a torrent client.