Overall great game. It didn't really need a how to I was good to go. This is a great game and generally it's good to see physics based godot games :). I had a few issues with the camera and some lag issues but generally it was a nice experience.
If you want to polish this more what I think you should do next is make what you can interact with more clear, add panning to the camera, and just basic debugging and optimization. great game, loved it.