Here are some places on the web where you can get furthur information about IRC.

IRC Help
A Guide to IRC http://urth.acsu.buffalo.edu/irc/WWW/ircdocs.html
IRC Central http://www.connected-media.com/IRC/
IRC Information Library http://www.botree.co.uk/library/irc.htm
New IRC Users http://www.newircusers.com/
Internet Relay Chat http://www.htmltips.com/patrick/irc.html
#IRCHelp Website http://www.irchelp.org/
Nukes and Trojans http://www.irchelp.org/irchelp/security/
 
Suggested Reading
IRC Prelude http://www.irchelp.org/irchelp/new2irc.html
IRC FAQ http://www.irchelp.org/irchelp/altircfaq.html
IRC Primer http://www.irchelp.org/irchelp/ircprimer.html
IRC Tutorial http://www.irchelp.org/irchelp/irctutorial.html
IRC Operator Guide http://www.irchelp.org/irchelp/ircd/ircopguide.html
RFC 1459 http://www.irchelp.org/irchelp/rfc1459.html
 
IRC Humor
The IRC Purity Test http://www.armory.com/tests/irc.html
IRC Addict? http://www.spacestar.net/users/melvan/irc/addict.html
Tao of IRC http://proxima.transverse.net/~steve/Tao-of-IRC.940110
 
IRC on Usenet
alt.irc
alt.irc.channels.macintosh
alt.irc.bots
alt.irc.hottub
alt.irc.ircii
alt.irc.lamers
alt.irc.questions
alt.irc.romance