The Building the Login Registration System using MERN Stack self-paced course guides learners through the complete process of developing a secure, modern user authentication system using MongoDB, Express.js, React.js, and Node.js. Tailored for web developers, software engineers, and students seeking full-stack skills, this course covers everything from setting up the backend server and RESTful API endpoints to managing user data in MongoDB and implementing JWT-based authentication and password hashing for security. On the frontend, learners will build responsive registration and login forms in React, handle state management, and connect seamlessly to the backend API. Through practical, step-by-step coding exercises and real-world best practices, participants will gain the skills to design and deploy production-ready user authentication systems, laying the foundation for scalable, secure web applications.