controllers (API routes), providers (business logic), and imports (other modules needed). Controllers
FreeCodeCamp offers a multi-hour NestJS tutorial on YouTube that covers everything from REST API creation to PostgreSQL integration using Prisma. It is a complete masterclass available for zero cost. 3. The "NestJS Zero to Hero" (YouTube Series) Nestjs Fundamentals Course Free Download
Here is a review structure you can use, whether you’re reviewing a specific YouTube playlist, a free weekend on an e-learning platform, or a community-driven guide. Course Review: NestJS Fundamentals (Community Edition) The Verdict: ⭐⭐⭐⭐⭐ controllers (API routes)