Take one part of the world's oldest spiritual system (shamanism), mix in one part of one of the world's most popular spiritual cultures (the Celts), and bring it up to date by blending in modern forms of shamanism. The result is one of the most amazing books you'll ever use, D. J. Conway's By Oak, Ash, & Thorn.
This book is filled with information that can start you on a lifetime of study, practice, and spirituality. First, you'll learn about ancient and modern forms of shamanism. You'll discover the secrets of the three shamanic worlds, and how you can travel through these mysterious realms. You'll be shown how to communicate and deal with the entities and allies you meet there. You'll also learn about the tools that a shaman uses.