What is IRC? and could the mods perhaps speed up quick aikido again...
IRC is short for Internet Relay Chat. In a nutshell it's a simple chat program with servers and channel where you can chat.
You can get to Toribash IRC server by clicking the Help button at the top of this forum. If you're going to be using IRC frequently, you should get an IRC client.
Here's a full tutorial on how to use an IRC client and how to access Toribash IRC server.
If you want more info, just Google it.