NOt all that hard, to get started, you yank the wipers off and then you pull up that cover that runs from one side of the car to the other, under the hood at the back of the engine.

YOu have a mechanical failure of the mechanism that operates the wipers. The service manual (which you should be reading) is not encouraging, it says you must replace the entire assembly -but the manual says that about everything in the damn car! Just get in there and find out what broke or came loose.