These books are great resources for anyone interested in game theory. To use them, simply start reading from the beginning to get a solid understanding of the concepts. When handling the books, be gentle due to the creased spines and rubbed covers. To maintain them, store them in a dry and cool place, away from direct sunlight. Avoid getting the pages wet. If you need to take notes, use a soft - tipped pen to prevent damage to the pages. And remember, don't bend the covers too much to keep the bindings secure.