Web chat is like talking to someone on the computer. You type your words on the computer screen and the person you're talking to sees them pop up on their own screen. Then they type back to you and you see their words on your screen. It's like texting or instant messaging, but on a website. This is really helpful when you need quick answers to your questions or when you want to talk to someone who is far away. It's also great because you can save the conversation and look back at it later if you need to.