Learn how to build a chat application using Socket.io in this introductory tutorial. Explore the differences between WebSockets and Socket.io while developing both server and client-side components with Node.js and JavaScript. Follow along to set up a Socket.io server, integrate the client library, and create a functional chat app. Gain insights into Node.js module systems, dependency management, and the step-by-step process of implementing real-time communication features. By the end of this 22-minute video, you'll have a solid foundation in Socket.io and be able to run your own chat server with multiple clients.