How to start writing add-ons (extensions) for Mozilla?

Question

JavaScript

Hello!
I’m learning to create extensions for different browsers I
already learned how to create for Chrome, Mozilla is next in line
But I didn’t find normal modern articles on this topic
But the official documentation is written incomprehensibly for me
Maybe there are some articles “for dummies” with an example of how to create an extension " Hello world!" under Mozilla?

Answer 1

https://developer.mozilla.org/en/docs/Building_an_...