The bookshelves should not be in the northwest or southwest corner. Books should be in the east, north, or west sides of the room.
The door should be two-shuttered and should be located in the northeast, north, or west. Windows can be set on the east, north, or west walls. The walls should be painted white, sky blue, cream, or light green.
If one will not sleep in the room, a pyramidal shape (walls sloping inward as they go upward towards the ceiling) will help study and meditation.