Using BitTorrent is legal, downloading copyrighted material isn’t. Be careful of what you download or face the consequences.
You need a client like BitTorrent, µTorrent, qBittorrent, Deluge or Transmission to download.
You can get a µTorrent compatible list here.
Please note that this page does not hosts or makes available any of the listed filenames. You cannot download any of those files from here.