A VPN, or Virtual Private Network, is a special type of network that helps keep your data and activities safe while you explore the internet. It's like a secret tunnel that you can use to send information without other people being able to eavesdrop. Whenever your computer or device connects to a VPN, all of the information that it sends or receives is sent through that secret tunnel, so it can't be intercepted by anyone else. It's like being in an invisible room where nobody can see what you are doing.