The book is structured to guide a witch from foundational knowledge to advanced cult practice:
It provides a comprehensive history of Hekate, from her origins to her role as the "Soul of the Cosmos" and "Queen of Witches," with extensive citations and a detailed bibliography.
A significant portion of the book focuses on the creation and awakening of sacred images, teaching practitioners how to "ensoul" statues to anchor the Goddess's presence.
The text includes rites directly from Cullen’s own practice, including formulas for sacred incenses, oils, potions, and rituals for necromancy and aggressive magic.
The search for a often stems from the book’s relative scarcity or price. Originally funded via Kickstarter and self-published, the high-quality hardcover editions—which feature silver gilded edges and exclusive full-page illustrations—can be expensive.
Unlike standard introductory books on Wicca, Liber Khthonia is a deep dive into a specific, contemporary cult of Hekate. It is often described as a "Hekate 102" or "103" level text because of its intensity and focus on physical, practical manifestation.