So, there's this menu bar near the top of the screen, right above the box that says Notices and contains info abou the chat room and the new moderators. If you're logged in, that blue bar says things like User CP, Blogs, FAQ, etc. If you aren't logged in, it says Register. That's where your friend needs to click to start the process.
SoberRecovery : Alcoholism Drug Addiction Help and Information - Register 