What could be the best way to introduce the world of computers to a kid, let’s say of 6 years old, so that he learns to handle it like a toy and stops dreading it like some esoteric, arcane and recondite machine from some eldritch, enigmatic, cryptic and phantasmal world ?
The BBC Microbit was designed for exactly this scenario: https://microbit.org/
If you want them to have a more desktop-like environment, the Raspberry Pi has kid-specific projects: https://www.raspberrypi.org/learn/
Or you can get a Pi Kano kit and it has everything you need: https://www.kano.me/