From publisher's site:
Cults of Glorantha: Volume 2 reveals the innermost secrets of shamanic traditions and sorcery schools. Contained are glimpses of the sorcerous cults of the God Learners and the spirit-questors of Glorantha’s ancient and sacred shamanic traditions. Sorcerer and shaman characters will find this resource invaluable, fleshing out Glorantha’s magical practices, spirit cults and Middle Sea schools of sorcery.
Inhuman cults also feature, including troll, elf and dwarf cults, founded on principles few humans will ever learn and wielding magic few humans could ever hope to master. For characters wishing to immerse themselves in the diverse cults of Glorantha, perhaps eventually ascending to the highest ranks of influence and power, Cults of Glorantha: Volume 2 offers all the character options and new mechanics they need to do so.
Cults of Glorantha: Volume 2 contains over 30 new sorcery and shamanic cults and 90 new spells, as well as new rules for Spirit Magic to use in your Glorantha – The Second Age games.