Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. This guide will introduce you to Node.js, including how to set up a Node.js development environment, create your first Node.js application, and understand the basics of Node.js modules and npm. Node.js allows you to run JavaScript on the server, making it possible to build scalable, high-performance applications with JavaScript. We’ll start with the basics, such as installing Node.js and setting up your development environment. Next, we'll dive into creating a simple server and exploring the Node.js module system. You'll learn how to use npm to manage dependencies and understand key concepts like asynchronous programming and event-driven architecture. By the end of this guide, you’ll have a solid understanding of Node.js and be ready to build your own server-side applications. Whether you’re looking to build RESTful APIs, real-time applications, or just want to explore server-side JavaScript, this guide is the perfect starting point.