I really liked the idea, it was difficult to figure out what to do though. After clicking around with the book stuck on the table I eventually did figure out how to turn the pages and return the book back to the shelf. I think there just needs to be some UI there that shows where to click so that I don't think there is a bug or something when clicking on the wrong spot doesn't work. I ran out of time after reading all the books, but will for sure come back to see if I can get the potion right.
Great job with the theming and artwork though, really fun idea that feels like part of "Mist" or a similar game.