If you have never torrented and don’t even know how to torrent or to install a torrent client to download torrent files I would recommend that you read up on them before even considering getting into torrenting.
Torrents are a method of distributing files over the internet. They operate over the BitTorrent protocol to facilitate what’s called [peer-to-peer (P2P)] file-sharing.
The above contains great info. If this doesn’t answer your questions then use the search and read more threads on torrenting.