The PDF includes night-vision friendly layouts. You can set your e-reader to red-light mode (preserving your dark-adapted vision) while still reading the evocation keys.

: The original rank of the demon from the Ars Goetia .

If you are looking for a "better" guidebook or instructions, users and reviewers have noted the following about the standard materials:

Standard tarot guides tell you to read upright and reversed. The Goetia PDF guidebook introduces the —reading the card upside down and backwards via a mirror. This is a specific technique for communicating with the Qliphoth (the shadow tree of life). The PDF allows you to print specific pages and place them against a mirror without damaging a physical book.

: Available from retailers like Lo Scarabeo and Llewellyn Worldwide .