To manage routes in a simple Express.js server, follow these easy steps:

1. Set Up the Server: First, create your server using Express.

   const express = require('express'); // This makes Express available
   const app = express(); // This sets up the app
   const PORT = 3000; // You choose the port number
   

2. Define Your Routes: Use app.get(), app.post(), and so on to set up different paths.

   app.get('/', (req, res) => {
       res.send('Welcome to the Home Page!'); // This shows a message when the Home Page is opened
   });
   

3. Start the Server: Finally, tell your server to listen on the port you've chosen.

   app.listen(PORT, () => {
       console.log(`Server running on http://localhost:${PORT}`); // This confirms the server is running
   });
   

By following these steps, you can easily control different routes (endpoints) and respond properly!