Books like The Ritual Magic Manual
David Griffin, David J. Griffin
The Ritual Magic Manual is 666 pages, about 12 hours 13 minutes at 250 words a minute.
12 books to read next
How long each takes
Satanic Rituals 4.0 h 
Wicca 4.3 h 
The Golden Dawn 13.8 h 
La Masonería 5.3 h 
Year Of Ritual 4.4 h 
Earth, Air, Fire & Water 4.1 h 
The Magickian 4.2 h 
The Way of the Green Witch 5.1 h 
The Voodoo Hoodoo Spellbook 5.1 h 
Magick & Rituals of the Moon 4.3 h 
Wicca Craft 3.6 h 
Ancient Ways 4.7 h Bar height shows length. Estimated at 250 words a minute.