This Book of Knowledge is found atop the tower of Sancta Helena’s Church, in Colcestre. You’ll need a key to get to the room atop the tower, and the key can be found in a room accessible via moving a moveable shelf. Use Odin’s Sense to locate it.
Raven Distraction is found within Belesduna Bandit Camp. The Book of Knowledge is found in the church building in the camp. To get to it, you’ll need to break the wooden cover on the outside of the building, and then shoot the barricade on the door. Then you’ll be able to head back inside and use the door to reach the book of knowledge.