Learn how to implement Next-Auth login authentication in a Next.js app using the App Directory structure. Explore the process of protecting pages with credentials or OAuth login from providers like GitHub. Discover various approaches to secure different parts of your application, including server pages and client components. Gain insights into setting up NextAuth options, configuring providers, and implementing middleware for authentication. Master the integration of Next.js images from OAuth providers and understand different protection strategies for your app's pages.