I thought I should share the reference material I am using to make a new, very simple video game for smartphones.
In order to create the base of the game I have checked the this video.
I will need to make copies of items within the game. While researching on how to do this, I found this video.
I wanted to make some items appear in random places on screen. The instancing video above (the one about making copies of items in-game) mentions how to put an item on screen. I checked the Godot Engine documentation on how to create random numbers, which you can find here.