As mentioned when you try to level up a skill that requires a Restricted Section Book, you can earn them as rewards from Brilliant Event tasks. Using the first Brilliant Event from the beta of the game as an example, you can expect to earn about 15 Restricted Section Books from completing all Brilliant Event tasks.

Please keep in mind: that event was only a test event that ran during the beta. As we get more Events, it will become clear whether this is a variable amount or if 15 books is approximately what players can get every time. This guide will be updated accordingly as more information comes out. More detail about events in general can be found in our Brilliant Events Guide!

UPDATE 6/27/19: The rerun of the first Brilliant Event has been announced for the live release of Wizards Unite! Check out the Brilliant Event: Fantastic Flora and Fauna Guide for more details. We will be able to confirm some of the information on this page with the release of that event!