I found it a little difficult to get through the tutorial as some mentioned below, but I'm sure creating something in 3D in GDevelop can be a bit challenging. Great idea though and makes me feel like trying to give the 3D extensions a try too!
Thanks for the feedback, i might try to make the tutorial a little more understandable, and i encourage you to make a 3d game (BTW i have some tutorials about the extension :
