Gather these parts for the well

Superglue the stack of stone rings alternating the stones so that the slots on the sides line up and so that the seams between the stones alternate as shown

Glue the side supports into the slots so that they line up with the bottom of the stone stack

Slot the top rail into the notches on top and the rope crank beam into he diamond slot in the side supports so that it is mostly hanging out of one side as shown.  The crank beam may be a tight fit.  It’s best to dry fit and then add glue to lock it in place.

Glue the roof plates onto the top of the side supports so they are centered up with the top beam.  The glue the crank wheel onto the end of the crank beam