This tutorial series explores the Vonage Video API, a robust and highly customizable video chat platform. It guides developers through building a basic video chat application that allows participants to engage in real-time video conversations with each other, while also enabling viewers to stream and watch these conversations on a separate page. The application uses Glitch as its server-side setup tool and vanilla JavaScript for client-side development. The tutorial covers the creation of publisher and subscriber tokens, handling routes on the server-side, and implementing authentication mechanisms. By following this series, developers can create their own video chat applications using the Vonage Video API.