the rear windsheild wiper quit working. what do I need to do to get it working

OMG thank you so very much for your answer. currently my tranny is being rebuilt so when I get it back I will check your answers out. also i need to find out why the heat and AC blower only blows on the high setting and get that fixed also. Being a 52 year old woman your answer sound like even I could do the repair Again thank you so much