From the back cover:
The College of Mages is now accepting qualified students interested in learning the art and craft of Magic. If you have demonstrated an aptitude for Magic, then we urge you to enroll today. Novices are welcome.
College of Magics expands the depth and breadth of HARP magic. Among the topics that the book covers are: What is magic and how does it work? This product introduces new types of magic, including natural magic, alchemy, and enchantment.
College of Magics also includes rules for creating and designing new spells; new HARP spells, and a primer on temporary and permanent magic item design. And of course new professions: The Magician, the Elementalist, the Vivamancer, the Thaumaturge, and the Necromancer.