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A fundamental course must explain how NestJS handles HTTP requests. You need to learn @Controller() , @Get() , @Post() , and how to work with @Req() and @Res() decorators.

Many top-tier educators publish complete, multi-hour NestJS bootcamps on YouTube. Channels like freeCodeCamp , Marius Espejo , and Academind regularly publish full-length backend development courses utilizing NestJS entirely free of charge. GitHub Open-Source Learning Repositories Nestjs Fundamentals Course Free Download

While Udemy courses are paid, instructors frequently run for marketing purposes. A fundamental course must explain how NestJS handles

Transform input data to the desired form (e.g., from string to integer). from string to integer).