If you want to post a torrent on the tracker you'll need to register an account the
tracker since forum and tracker account are completely separate. Once you have an account you can login and click the upload link at the top of the main page, select the torrent file from your hard drive and give it a title and description then click upload. You'll need to see d the torrent until a few people have completely downloaded and can help seed it.
Do you need instructions for creating a torrent or seeding? If so try
Bittorrent Tutorial