Learn how to implement authentication in a full-stack MERN (MongoDB, Express, React, Node.js) project through this comprehensive tutorial video. Master both email login using JSON Web Tokens (JWT) and Google OAuth authentication. Follow along as the instructor guides you through creating a layout, building an auth form, setting up Google OAuth, implementing JWT login on both frontend and backend, creating auth middleware, handling user actions, managing likes, deletes, and edits, dealing with token expiry, and finally deploying your authenticated application. Gain practical experience in modern web development techniques and enhance your skills in building secure, feature-rich applications.