The latest story in the Treehouse book could vary depending on when it was last updated. Maybe you can look for the latest edition in a bookstore or search online bookstores for the most current information.
First, you need to have a good design. Decide on the size and layout that suits your needs. Then, gather the right materials like strong wood and proper nails. Make sure the foundation is stable to support the weight.
I'm not sure of the exact count. It depends on various factors like recent releases and editions. You might want to check the publisher's official website or a comprehensive book database for the most accurate number.