Using this Creatto set is a breeze. First, take out the plastic tiles and start interlocking them according to the model you want to build, whether it's the rainbow butterfly, dolphin, handbag, or designer dress. The tiles fit together easily, so you don't need any tools. Once you've built the basic shape, add the string of 40 LED lights. You'll need to insert 2 AA batteries (not included) to power the lights. This set is great for ages 8 and up, so it can be a fun family activity. When it comes to maintenance, keep the set in a dry place. If the tiles get dirty, you can gently wash them with mild soap and water and let them dry completely before storing. Avoid pulling the tiles too hard as they're flexible but can break if over - stressed. Have fun creating your rainbow - colored models!