Express Introduction

1)  Create a directory named as d:/foo

2) Create a file name as package.json

{
  "name": "Your app name",
  "description": "A concisense description of the app",
  "version": "0.0.1",
  "private": true,
  "dependencies": {
    "express": "4.x"
  }
} 

3) In the directory d:/foo, run 

npm install 

which will install Express and its dependencies.

4) Create a init JavaScript file, named as, for example, 'app.js'

var express = require('express');
var app = express();

app.use(express.static(__dirname + '/public'));

app.listen(8080);

5) Run app.js 

node app.js

Done!