How to create your own module for React?

Question

React

Good afternoon! Despite the rather long use of react, there are still significant holes in my knowledge. So I set myself the task of implementing a module similar to fancyapps with minimal functionality.
How it should work:
We throw the container for the modal ( ) into the root app.js file <ModalGallery/>. Next, on one of the screenshots, I add 3 containers for images ( <ModalImg/>) with prop (code="gal1" src=...) this container, like the img tag, displays an image, but when you click on it, the modal container (described above <ModalGallery/>) should open, it should receive images from all <ModalImg/>with the same code as the clicked one, all in array format.

Well, the question itself:
Could you send tutorials that describe how to create similar and not similar modules for React. Thank you in advance. (I was never able to find anything, although I may have been looking in the wrong place).