the gunslinger 's body healed itself while eddie and susannah learned the things the gunslinger had to teach them : how to shoot , to hunt , to gut and clean what they had killed ; how to first stretch , then tan and cure the hides of those kills ; how to use as much as it was possible to use so that no part of the animal was wasted ; how to find north by old star or south by old mother ; how to listen to the forest in which they now found themselves , sixty miles or more northeast of the western sea .