This 3 - volume dictionary set is a great resource for language lovers. You can use it to look up English words, understand their meanings, and explore language history. When using it, handle the books gently as the covers are damaged. Don't press too hard on the pages to avoid further wear. To maintain it, keep it in a dry and cool place away from direct sunlight. This will help prevent further discoloration and damage. If you need to clean it, use a soft, dry cloth to gently wipe the covers and pages.