Step 1: Installing Node.js 

Before you dive into Node.js development, you need to install Node.js on your machine. Visit the official Node.js website (https://nodejs.org/) and download the appropriate installer for your operating system. Once downloaded, run the installer and follow the installation prompts. 

Step 2: Creating Your First Node.js Application 

• Open a Terminal/Command Prompt: Launch your terminal or command prompt to start working with Node.js. 
• Creating a New Directory: Navigate to the location where you want to create your project directory and run the following command: 

“ mkdir my-node-app 

   cd my-node-app “ 

• Initializing Node.js: Inside your project directory, initialize Node.js by running: 

“ npm init “ 

Follow the prompts to set up your project and create a `package.json` file. 

Step 5: Exploring npm and Modules 

Node.js offers a rich ecosystem of packages and modules through npm (Node Package Manager). You can easily install and use third-party libraries to enhance your projects. 

• Installing a Module: Install the `lodash` module as an example: 

“ npm install lodash “ 

• Using the Module: Modify your `app.js` to use the `lodash` module: 

“javascript 

   const _ = require('lodash'); 

   const numbers = [1, 2, 3, 4, 5]; 

   const sum = _.sum(numbers); 

   console.log(`Sum of numbers: ${sum}`); “ 

• Running the Updated Script: 

“ node app.js “ 

You should see the sum of the numbers displayed in the terminal. 

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