An IP address is a unique number that identifies a device connected to the internet. IP which stands for "Internet Protocol," is a set of rules that dictates how information is shared on the internet. An IP address is how and where that information should go. If the IP address is like a physical mailing address, IP is the part that tells you how to get there.
Every device actually has two IP addresses: the public/external address which is used to communicate with the wider internet and the private/internal address, which communicates with your local network aka your personal internet router.
Knowing your IP addresses is useful for a few different reasons, such as setting up a file server, adding a printer, or communicating with local devices on the same network. Because your IP address shares your location, it is also a way to understand how your personal information is shared. This is also why more and more people opt to use a VPN or "virtual private network" which obscures your actual location.
How to find your public/external IP address
Simply Google "what is my IP address" and the result will appear at the top of the page.
How to find your private/internal IP address
On a Mac
In "System Preferences" go to "Network." In this window, you'll find your IP address right under the network status.
On Windows
Open "Network & Internet," then click "Properties" in WiFi or ethernet, depending on your connection. In "Properties," scroll down to find IPv4 address. That is your local IP address.
On an iPhone/iPad
Go to "Settings," then "WiFi," then select the network you're connected to. Your IP address is displayed in the section called IPv4 address.
On an Android/tablet
Go to your Wifi network settings, then select the network you're connected to. You'll find your IP address along with the other network information.
