To decipher Joyce's novel, you need Edu's help, go to his office (click on the map --> Edu's office) and he will help you, but bear in mind that he also has to stick to his schedule. You shouldn't be there before 5pm. When you are there he will ask you for a book you should have in your inventory. If you already have it, just drag it towards Edu. If you don't have it, you can escape that screen by typing "FINNEGANS WAKE" (no accents nor apostrophe).
To get the book, just go to the library (Map --> Library), click on the librarian and ask her for the book "Finnegans Wake". The book will appear on the desk, click on it so you can store it and complete the compass task. After you leave the library, be sure you have collected all the objects.