With the Express installer in place, you'll create a brand new Express application and configure the Express static middleware, as we've done previously to serve up the public folder. Finally, you'll call app.listen on port 3000. You'll provide one of those little callback functions to print a message to the Terminal, such as server is up on port 3000.
Once you have the server created, you'll start it up inside the Terminal and head to localhost:3000 inside the browser. If we go there right now we'll get an error, because there is no server running on that port. You should be able to refresh this page and see the little message we typed in the paragraph tag over inside index.html.
The first thing I'll do is ...
