The rules are pretty simple, don't do anything illegal and try to have fun.
To get started, you can sign up and create an account, or you can simply enter a screen name and click 'LOGIN'. You will have (guest) attached to your username.
Once in the lobby - find the orange triangle, click on it, then hit 'JOIN'.
Let me know if you like the idea of having audio and video feeds for the chat or not. I have not decided on a chat service just yet, so input would be good.