Starting the server, Step 1

index.js

//  First we require the http native module and we store it in a variable
const http = require('http');

//  Then we set a port based on the following condition: if the enviroment variable
//  'PORT' exists, then we use it. Else, we use 3000.
const PORT = process.env.PORT || 3000;

//  Then we call the createServer() function to initialize our server
//  And we store it in a cool variable. 
const server = http.createServer(
    //  Note this function, this function will allow us to add routing,
    //  functionallities and other stuff to our ser
    () => {
        console.log('Im the function that holds a lot of your server functions')
        //  Then we call the listen() function to start listening on the Port that we have set
    }).listen(PORT);

server.on('listening', () => { console.log('We are listening on', PORT) });