What is an IP address?
An IP address is a numerical identifier assigned to devices participating in a computer network. IP addresses are used for routing, and the most important use for an IP address today is to identify a computer or device on the Internet. For example, when a person accesses the Internet, an IP address is necessary to find the server that holds the information desired.
Why is it important to know what's my IP address?
You should know and understand where you are located on the Internet, as it's useful in many different ways. Many websites like online stores and tracking your orders will require that your IP be located in certain areas. For example, if you make a purchase on a website focused on the US, and your IP address is not from the US, your order will be rejected; or if you need technical support for a product or service, they will likely need to know what is my IP address so that they can direct their efforts properly.