You'll learn how asynchronous code works in Node and the Node event loop, as well as how to use the event emitter, streams, buffers, pipes, and work with files. We'll see how that leads to building a web server in Node.We'll dive into web sites, web apps and APIs with Express and learn how Express can save us time as Node developers.During it all you'll gain a deep understanding of the JavaScript concepts and other computer science concepts that power Node.NodeJS doesn't have to be hard to learn. The biggest mistake most coding tutorials make is expecting someone to learn simply by imitating others' code. Real world situations are never exactly like the tutorial.