Using this Melissa & Doug water-painting set is super easy. First, grab the included paintbrush. Then dip it in water. Next, brush the water onto the pages with outlined scenes. You'll see the colors start to appear and the pictures become vivid. As for the pages, don't scrub them too hard with the brush to avoid damaging the pigment patterns. When you're done, let the pages dry flat. Store the set in a dry place to keep the pages in good condition. This set is great for kids aged 3 and up, so always supervise young children during use to ensure their safety.