This tutorial helps developers build a video conferencing web app using Python, Flask, JavaScript, and Vonage's Video API. To start, you need to create a Vonage Video API account, register for a free account, and set up an initial project with the provided GitHub repository. The tutorial then guides you through creating a Flask application that maps URLs to HTML templates, which render video conferencing functionality using the Vonage Video API. On the front-end, JavaScript code initializes a session object, subscribes to streams, and connects to the session using a token generated on the back-end. The tutorial concludes by providing resources for further learning and community engagement.