The "Age of Empires Official Strategy Guide" by Steven L. Kent is a revised and expanded edition published by Microsoft Press in 1998. This textbook, part of the Eu-Inside Moves Ser., provides detailed strategies for the popular role-playing game "Age of Empires." With 304 pages, this trade paperback guide covers various aspects of the game, making it a valuable resource for players looking to enhance their skills and progress through the game more efficiently.