Replace 'YourName' in the top left of the screen with whatever nickname you want to use in the IRC channel (chat room).
There are two buttons in the bottom left. Click the left one (it looks like a lightning bolt).
A warning will pop up saying 'An attempt has been made to connect to... irc.afternet.org'. There will be two buttons; 'cancel' and 'allow'. YOU ABSOLUTELY MUST CLICK ALLOW. It will not work at all if you click cancel.
You will now be connected to the chat room. You can talk by typing things in the space just to the right of the green button and pressing enter. Whenever a warning pops up ALWAYS CLICK ALLOW.
Every word that you say will send a random email to one of the targets.