A book can point you in a promising direction. By making you aware of ideas and aware of what you are doing, it can help you learn. No one, however, can make you skillful but yourself. Reading the pamphlet on the Royal Canadian Air Force exercises will not make you physically fit. Studying books on tennis, swimming, riding a bicycle, or riding a horse will not make you an expert.
Negotiation is no different.
Fisher and Ury, Getting to Yes, p. 153. This course focuses on the development of negotiation skills. While the class will involve readings about and discussions of aspects of dispute resolution, much of the class will be spent in negotiation simulations. Simulations involve role-playing, and every person in the class will be actively involved in the simulations. Not only is this a lot of fun, but it requires you to approach issues from a perspective that may be new to you.