You will then see a list of broadcasts, either live or saved. Click on the appropriate broadcast to view, and that's it! Every broadcast, live or saved, also features a chat room, so you can chat live with other fen and also leave comments after the fact! Note that you will need to be signed in, either with a Bambuser account or even more simply, through Facebook, to leave comments.
It's recommended that you visit now and click on the green "Follow rcw139" button, as you can then register your e-mail address and receive a notification when a webcast goes live.