The way people use torrent clients is very simple.
Step 1: Download a torrent file from a website (most popular website Thepiratebay.org)
Step 2: Open that torrent file using uTorrent
Step 3: Download (this will be automatic once you've opened the torrent file with the bittorrent client)
However, if you want to have high speeds I suggest you configure your client settings (youtube has many videos that tell you exactly what to do) and also port forward.
If you don't know what port forwarding is, go to PortForward.com and, again there will be a list of instructions on exactly how to port forward.