Along the bottom is a long box where you type your posts, and  "enter".

     Question Mark:  Click on the "?" and a "Help Button" will appear to
             the left.  Click on the button to get Help.
      Hammer:  Click on the "Hammer" and an "Options Button" will appear
              to the left.  Click on the button to see the Options.
      X:  This will close the window you are in.

You can move around by just clicking the buttons.  There will also be a button for #politics, and one for the Status window.

 If you want to install your own chat software,  learn some chat "lingo" and channel courtesy .. go here.