This series is hosted on the Vonage Dev YouTube channel and aims to share knowledge in bite-sized portions, specifically focusing on the token roles in the Vonage Video API. Amanda Cavallaro, a Developer Advocate at Vonage, demonstrates how to generate and assign token roles for user authentication and permission management. The three possible token roles are subscriber, publisher, and moderator, each with varying levels of permissions and capabilities. By generating tokens using the video API Node.js server-side library, developers can authenticate users and control access to their sessions, including the ability to disconnect, mute, or stop publishing streams.