This book of knowledge is found in southern region of Dunseverick. You’ll need to shoot down a large net of rocks to reveal a hole in the floor that you can jump down into. Then, from there you’ll want to head down into the hole in the ground on the lower level where you’ll find the book of knowledge.
This book of knowledge ability is located in the desolate settlement of Bally na Gall, east of Armagh. The area is inhabited by wolves so you’ll want to take them out before you head for the burned down house where you’ll find the book of knowledge. The book of knowledge is found beneath a stone barricade within the house. You’ll need to grab an oil vase from the nearby house across the path and use it to break the barricade. Then, you’ll be able to grab the book.
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This book of knowledge is found in Clogher. You’ll find the book in a hidden room behind a breakable stone barrier. The barrier itself is quite well hidden as it is covered in a few vines. If you find where the red oil vases are, then you’ll find the barricade just round the corner. You’ll want to use one of the oil vases to explode the barricade and then head into the secret passage where you’ll find a moveable stone barricade. Break the wooden crates to the right of the stone and then move the stone to allow you to pass through into the room where you’ll find the book.