I had joined Freenode :)
I am cool :P
I am using X-Chat (also could use Pidgin, web or other IRC)
$sudo apt-get install xchat
You can use any channel available on freenode. (In the picture, I joined #ubuntu). After connecting to a channel, you could add channel, so dont worry :)
You could also build your own channel.
Done. Happy chatting :)