If you know and have already learned Node.js, you can use NestJS. If you did not know Node.js, firstly learn Node.js, then you can try to learn NestJS.

1. Very good tutorials:

   • Node.js Tutorial at W3Schools - each easy, short and simple lesson.
   • Node.js Tutorial at Tutorials Point - if you prefer reading instead of watch videos, it is worth for you.
   • Nodejs.js at Guru33 - if you are a WIndows user and an avid reader.
   • Node.js Tutorial for Beginner - if you do not have patience with reading, want to learn quickly and watch the video, the video must be worth for you.

2. Getting started with NestJS - if you prefer reading instead of watching video.

3. Ideas App - NestJS Tutorial - If you prefer watching videos, it is worth for you. Once you learn all, you can check the NestJS tutorials: Kelvin Mai.

Once I've tried it. But don't remember why, I switched to LoopbackJS