Learn how to build a REST API with Next.js 13 in this comprehensive tutorial. Discover the new route handlers in Next.js and understand when to use API routes in your application. Create a new project, explore Next 13.3 changes, and set up environment variables and API keys. Implement GET, DELETE, POST, and PUT route handlers, as well as dynamic API routes. Follow along to create five API endpoints and gain valuable insights into building efficient REST APIs with Next.js 13.