Walk down the stairs. Turn right at the bottom of stairs and exit through the door on the right. Wait by the statue of a man by the window.
You need to go down the stairs and make a left then make a right so you are in front of the stairs going downstairs. Now go down to the second step and wait.
Walk down the stairs. At the bottom of the stairs, make a right. Then, walk though the first doorway on your right to leave the library. There will be a statue bust on your left just past the doorway. Stop next to that bust.