Azureus is(arguably) the most popular bittorrent client nowadays. It depends on Java and you'll find links to install the JRE in the download page.
There are a no. of other clients too. If you are familiar with the command line, you can just download the 'bittorrent' package through
URPMI . then 'btdownloadcurses.py name.torrent' would download the torrent.