Navigate to the Boards section, select a board, and click "New Post".
Click on the post title to view it, then use the reply form at the bottom of the page.
Click on the MRC Chat link in the navigation menu (or IRC for the inter-BBS IRC bridge). You must be logged in to use chat.
Click on your username in the navigation bar, then click "Edit Profile".
Yes! Use any telnet client to connect to port 2233.
Post in the Technical Support board or contact an administrator.