The books have all the masteries listed, even though the character has none of them unless the appropriate primer is used (or quest done, to get the bard masteries).
Primers are a character modification, not a book thing. You use one on a character, the character has it. If you hand the book off to someone else, the access to the mastery does NOT go with the book, but stays with the character. You can pick up any mastery book, and use it, once you have used the mastery primer. The book's just the tool for picking/changing a mastery (you have to bring up the book's context menu, not its pages, to pick your initial mastery, or to change masteries), and to get the icons from to access the mastery powers.
You also don't have to use a lower level primer if you have a higher one. If you have a "I" and a"III" for a skill, you don't need to use the "I" nor do you need a "II" to upgrade from 1 to 3. You just use the "III" and you have all the abilities that the Mastery has, at the highest proficiency your real skill level allows.
Soulstoning has no effect on the mastery, other than you can't use it while the skill is off (there's a bug currently that allows some to be used improperly that is being fixed in the publish currently on Test Center).