From the publisher's website:
Rugged lands and merciless cold breeds hard, cunning people who do what they must to survive. Such are the ways of the northlands of the Inner Sea region, and the fierce people of the deadly nations of Irrisen, the Lands of the Linnorm Kings, and the Realm of the Mammoth Lords. Learn the secrets of these brutal frontiers, whether as a master of icy magic, a hunter who tracks through the fiercest polar blizzards, or as one of the region’s cunning natives, like the Ulfen vikings, savage Kellids, Erutaki hunters, or mysterious Snowcaster elves. The lands, people, magic, and secrets of this brutal frontier are yours to discover with Pathfinder Player Companion: People of the North.
Each monthly 32-page Pathfinder Player Companion contains several player-focused articles exploring the volume’s theme as well as short articles with innovative new rules for all types of characters, as well as traits to better anchor the player to the campaign.