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Learn to build a complete Software as a Service (SaaS) application from scratch using Next.js in this comprehensive 4-hour tutorial. Start by exploring the project demo and understanding full-stack Next.js development concepts before diving into practical implementation. Set up your development environment and master Next.js routing and folder structure fundamentals. Create and style essential pages including the home page, dashboard, and account sections while building a functional app header component. Implement full CRUD (Create, Read, Update, Delete) operations for expense management and integrate a database using Prisma ORM. Master server components for data retrieval and server actions for data updates, including the revalidatePath function for cache management. Integrate PostHog analytics to track user behavior and application performance. Add robust authentication functionality and implement payment processing capabilities with webhook handling for secure transactions. Build utility functions for authentication and membership verification, then prepare your application for production deployment. Complete the tutorial with final testing procedures and learn to configure PostHog for both development and production environments.
