The Internet Relay Chat (aka IRC) channel is a place for people to textually chat in real-time. It is recommended, but by no means required, that you learn what IRC is by briefly reading some of the IRC Frequently Asked Questions or The IRC Prelude.
The Lojban IRC channel is on the Freenode IRC network. It is recommended that you register your nickname with Freenode, using the nickname setup instructions.
If you don't have an IRC client, you can use a web interface:
The Mibbit interface is recommended because it is more stable and featureful.
Simply enter a chat nickname and click "Click to join chatroom". Easy!
Use irc.lojban.org or irc.freenode.net for the server, port 6667. The channel is #lojban. Registering with NickServ is recommended.
There are almost always more than 50 people connected, but most of the time, they'll be idle. Say <em>coi</em>, and wait. Get a soda. Practice your vocabulary. But be patient. Dedicated IRC'ers don't sit in front of the computer 24/7 waiting to respond within 10 seconds of everything said. Think of it as sort of a fast moving message board.
You might also have a look at the IRC cheat sheet, which contains a list of translations of frequently used expressions.
There are just a few rules, to make sure everything runs more smoothly:
You'll be warned if you break one of the rules. If you keep doing it, you'll get kicked, and quite possibly banned until everyone forgets why you're banned.
Furthermore, thanks to help from Theodore Reed and Jordan DeLong, there are now public logs of the lojbanic portions of the IRC channel.
Note: the logs are filtered so that they contain only lojbanic text. However, you might still be offended by the things discussed there. If you are, that's your problem and the LLG explicitly disclaims responsibility for anything said on the IRC channel, including by members or officers of the LLG.
Furthermore, no guarantee is made as to the correctness of the Lojban therein.