Sometimes when you are either doing networking tasks, remote connecting to an external computer, or trying to set up a game server, you need to know your public IP. This series of 4 numbers provides your Internet address so others can communicate with you.

While there are dozens of ways to get this value, I have found the easiest to be going to this web site:
[http://www.whatismyip.com/]

This web site is a simple and effective way to quickly determine your public IP.