These books are great for reading and learning. To use them, simply open the cover and start reading. When handling, make sure your hands are clean to avoid soiling the pages. If you want to take notes, use a bookmark or a piece of paper instead of writing directly in the book. Store them on a flat and stable bookshelf to prevent them from getting damaged. If the books get dirty, you can gently wipe the covers with a dry cloth. Since they are older books, handle them with care to keep them in good condition for a long time.
