To start Riece, you just type M-x riece. Then you will prompted for the name of an IRC server. A typical IRC network may consist of several IRC servers and you will need to pick up appropriate one. Most of IRC networks provide a list of available servers on their Web pages:
If your nickname is taken, you will be asked to use different one. The
initial nickname can be set via the variable
default, your nickname is generated from your login name.
After successfully connecting to an IRC server, you can join a channel
and talk with people there. To join a channel, type C-c j. By
the way there is a channel called #Riece on IRCnet, so feel free
to use it for testing.
Now you enter a message and it will be seen by everyone else on the channel. Messages from other people will appear on the top-left window.