Using this bookmark is super easy. Just open your book to the page you want to mark, and place the bookmark on the corner. The magnetic force will hold it in place securely. When you're done reading, simply close the book with the bookmark inside. As for care, keep it away from strong magnets or rough surfaces. If it gets dirty, you can gently wipe it with a soft, dry cloth. That way, your bookmark will stay in great shape for a long time.