This offers a lot of freedom for creating games in many genres but is still limited by available models, etc.
I think personally I prefer a more focused toolset like Mario Maker as that offers a ton of options catered specifically to 2D Mario while this offers a lot of variety but lacks the focus if say you wanted to make a bunch of F-Zero tracks or something.
The tutorials do a fine job of teaching you how everything works but again, I prefer the simplicity of something like Mario Maker over this.
It's a great set of tools but it requires you to be more invested in general game building to get the most out of it