A1: Alk with the old Chinese man on the floor. Then look at the book on the stand behind him and go back to speak with him again. He won't help you unless you help him first. After talking, go to leave and he’ll offer help. He'll give an example book and tell you to find a book that looks like it. Firstly, take the book to the desk to look at it under the magnifier. You'll see it's written by "De Gruttola". Walk up the stairs, and look at the book here. You'll find out De Gruttola has the number 1796. Now go back down and look at the book on the table behind the man. Book 1796 is on the third level and that as the author begins with “d” it is in the white part of the level. Go there, and find the book.