To use this book, simply open it up and start reading to explore the world of the Gothic Cathedral. When handling, make sure your hands are clean to avoid staining the pages. Store it in a cool, dry place away from direct sunlight to prevent the pages from yellowing and the dust jacket from fading. If the dust jacket gets dirty, you can gently wipe it with a soft, dry cloth. And when not in use, place it on a bookshelf upright to keep the binding in good condition.