Spanning tree protocol question

I need basic explanation for root bridge, root port, non root bridge, designated port, non designated port in spanning tree protocol. When I read about root bridge, root port, non root bridge, designated port, non designated port in spanning tree protocol, I can't understand the concept. And also there is three switches with same mac address (0001.C714.603 and which one of this will be elected as a root bridge, non root bridge, root port, designated port, blocking port in spanning tree protocol. Kindly please explain in basic understandable.