Now that you’ve gone through unit 0 and have Node.js installed and running, it’s time to see it working. Unit 1 is about building from the get-go. You begin by building a small web application in Node.js and gradually piece together the components that work behind the scenes. In this unit, you learn all you need to get a web server running on Node.js that serves some simple static content: HTML pages, pictures, and a stylesheet. Toward this goal, you look at the following topics: