I made 2 very small 3d "games" with Godot. There are a lot of things to learn in Godot. I leaned mostly on their own documentation and maybe a few YT videos he

I made 2 very small 3d "games" with Godot. There are a lot of things to learn in Godot. I leaned mostly on their own documentation and maybe a few YT videos here and there for certain effects. I would very much recommend 2d to start, there was a lot of fiddling with trigonometry to get the camera and things working in 3d. Really not hard but might be frustrating for a kid if they haven't been exposed to math like that yet. Other than that, just get started. I would recommend finding examples of similar games before you start. For my second game I just took the FPS tutorial and hacked at it until it did what I wanted. Much easier than starting from scratch and lets you dip your toes into the concepts you need to while being able to ignore the rest for now.