This app is best for Absolute Beginners, who does not known about NodeJS, ExpressJS and MongoDB. This app is linked with my YouTube channel "Dr. Vipin Classes" for regular updates. In this App, I explained about following topics: 1. How to install NodeJS? 2. How to setup VS Code for NodeJS? 3. How to request POST, PUT, GET and DELETE Query using Postman? 4. How to start ExpressJS Server? 5. How to use Nodemon Tool? 6. How to insert data into MongoDB by POST request using NodeJS? 7. How to display data from MongoDB by GET request using NodeJS? 8. How to update data into MongoDB by PUT request using NodeJS? 9. How to delete data fromm MongoDB by DELETE request using NodeJS?