[dataweaver]

When I create magical styles using the Path/Book Magic system, I use Paths and Books in a manner analogous to a martial arts style's skills and cinematic skills, respectively. I usually call them Paths and Books, as I have no reason not to - although I sometimes prefer to use the term "Mysteries" instead of "Books".

I generally don't associate Books with Paths; rather, I associate them with magical styles: that is, each style gets two or three Paths that represent the overall kinds of magic that the style teaches (with another one or two Paths showing up in the list of optional skills), plus one Book representing the secrets of that style, generally requiring the magician to first be initiated into an inner circle of some sort.

If the gatekeepers of the style have several layers of secrecy or multiple factions with distinct approaches to magic, there may be multiple books corresponding to the additional layers and/or factions; but by and large, each style has one Book of secret rituals.