These Hardy Boys books are great for hours of reading fun. To use them, simply open the cover and start reading. You can enjoy them at home on a cozy day or take them with you on a trip. When handling the books, try to keep your hands clean to avoid adding more soiling. Don't bend the pages or put too much pressure on the spine to prevent further wear. Store them in a dry place away from direct sunlight to preserve their condition. If you want to mark your place, use a bookmark instead of folding the pages.