I've updated the existing (and now a bit outdated) 2d drawing tutorial to Godot 4.X and added a couple of new drawing examples (I think it is more fun now!). I would be grateful for feedback- specially from those new to _draw()
functions, so they can follow it and see if it is clear and instructional! It can be done with both GDScript and C#.
Here it is: Custom drawing in 2D