Sheer absolute noob question here but I am even struggling to create a solid ground.
Any tutorials or advice will be much appreciated 
All I am doing is dragging a prefab onto a scene.
I am adding a rigid body and also a box collider, my noobness thought that would be it, but no.
Tried a quad and a collider on that and wondering is there some sort of reference if colliders are solid?
So anyway ignore all I say and let me start from scratch, but what is the best way to add a basic flat ground at 0 with a player object and rigid body that doesn’t fall through infinity
Then after that I maybe back to ask more equally stupid questions about terrain creation