a) Install nodejs b) Prepare for Node js server, Create base structure mkdir myappnode cd myappnode npm init (accept all defaults, creates package.json) npm install --save express body-parser Create route base structure mkdir app cd app mkdir routes cd routes Add HTTP GET method support vi myapp_routes.js module .exports = function(app, db) { app.get('/myapp', (req, res) => { res.send('Hello from myapp, GET method') }); }; Create new index.js (/app/routes/index.js) const noteRoutes = require('./ myapp _routes'); module.exports = function(app, db) { noteRoutes(app, db); }; Update server.js cd ../.. vi server.js const express = require('express'); const app = express(); const port = 90...