As you acquire Books from the Village, add them to the top of either stack in the Backpack spaces of your Apartment board. The books you collect during a single action can be allocated in any order to these spaces as you like. However, once you place them, you cannot rearrange them again.

Any future books you gain must be placed on top of the existing stacks. The stacks in your Backpack cannot exceed 6 books in height.

Any additional you collect must be discarded back to the bag.