Connecting to IRC, is most likely easiest through this method. It's as simple as:

1. Go to mibbit.com
2. Enter the server name, your username, password if you wish and the channel name.
3. BAM! You are connected.

This method will open up a chat client on a web page. If you are like me and need to be discreet at work, this may not be the best option for you. (see Pidgin or Trillian)