In the simplest terms, using a VPN (which stands for "virtual private network") lets you hide who you really are and where you really are while using the internet from everyone except the VPN. In less simple terms, a VPN is a service that sends your traffic through an encrypted connection to a remote server maintained by the VPN provider before it's dispatched to the public internet. The encryption part makes it so your traffic is unreadable to third parties like your ISP and Google; routing that traffic through a remote server then gives you a different IP address, which makes it look like you're browsing from somewhere you aren't actually located IRL. Using a VPN is often likened to driving around in a rental car with tinted windows and a license plate that doesn't match your home state, or arriving at a location via secret trapdoor and wearing a mask while you go about your day.