These antique books are great for collectors or those who love classic literature. To use them, simply open the pages and start reading. As they are old, handle them gently to avoid further damage. When not in use, store them in a cool, dry place away from direct sunlight to prevent more darkening of the pages. If you need to clean them, use a soft, dry cloth to gently wipe the covers. Don't try to repair any loose pages on your own; it's best to consult a professional book restorer.