This boxed set of the second edition of Chivalry & Sorcery includes three core rulebooks.
Book 1 discusses character creation, special character traits, experience and advancement, and an introduction to fantasy role-playing games.
Book 2 discusses combat, feudal age economics, and tournaments.
Book 3 discusses magic, magical combat, demons, beasts, monsters, non-player characters, and the undead.
All three books contain lots of charts and illustrations.