Using this Harry Potter magnetic bookmark is super easy. Just place it between the pages of your book where you left off, and the magnet will keep the pages in place. When you're done reading, simply pull it out gently. As for maintenance, keep it away from sharp objects to avoid scratches. Also, don't expose it to high temperatures or strong magnets as this might affect its magnetic strength. If it gets dirty, you can use a soft, dry cloth to wipe it clean.