In general, torrents are used for large files, as you can not easily distribute a 12 GB video file. This can, however, be used for small files, for example, if they are streamed data from the web (from the video service like MTV or VH1, to get it). Torrents are also used for OS ISO images. Torrenting an operating system, you will be able to update in the future, as now you can keep it up to date thanks to the torrent.
We are a very new and very complicated way of working with any tracker system. It is not very similar to how you usually download files from a server using a web browser. Instead of connecting to a computer connected to the Internet, use a network connected to the network, where the user can be such as Google, Yahoo or, etc. A client program for downloading torrent is used. These clients are usually built into your operating system. For example, on Linux (Slackware, CentOS, Ubuntu, Mint) for most popular Linux operating system installed by default, the client is used. In Windows, you can see, for example, and many Windows applications support torrent.