Got a link? I’m in the dark techie wise .. I don’t know what torrent is .... ;)
First, you need a torrent client like uTorrent (that's the one I use and recommend). They have versions for Windows and Linux. www.utorrent.com. It is free.
Install the application and then you can download the Opening Ceremony broadcast from Here. This is the BBC broadcast and it does not include the entrance of the athletes nor the lighting of the cauldron and fireworks that occurred after the athletes entered. It is about 600mb, but there are actually more seeders than there are leechers right now. There's an HD version that is much larger (3.25gb) right here, but I have not tried it yet. I'm downloading it right now, but getting awful download rate.