The advantage of a high profile partner is you can find out about them through the media
Although I could pretty much read the book with ease, I still needed a dictionary by my side, because some words were still obscured for me. I also jotted down some notes so I wouldn't forget about them and could revise it anytime.
For what it was worth, the book was surprisingly pretty neutral in giving out the history of the realm, unlike the content of the materials read by Valmeier in the human realm.
Although, to be fair, he was a clergy, so...I guessed fanaticism was in the package.
The school book was milder, written from an observer's point of view with as much neutrality as one could exercise as a demon talking about other realms. Perhaps that was why the demons--at least the demons here, in the realm of greed who grow up with this book--had a more open mind than humans about other races.