You can find yourself in a room just beside the boiler. Turning slightly towards your back side you will find a door open just walk out of the door and keep walking straight and you can find a chest with different boxes and a black door. Just walk near the black door and walk to the other room. And you have entered the other in here you can find the book racks. Walk to the second book rack which is just beside the table Rack and green door and stand in front of a green door. This is the final end point. This is the final end point. You have reached the destination.