Using the Crest Jr youth helmet is a breeze. Just put it on your head and use the Ergo Fit system to adjust it with one hand until it fits comfortably. When you're out in the sun or rain, the visor will help keep your eyes clear. Remember to always fasten the straps securely before wearing it. As for maintenance, you can use a mild soap and water to clean the helmet's outer shell. Don't use harsh chemicals as they might damage the polycarbonate material. Store the helmet in a cool, dry place away from direct sunlight when not in use. Check the helmet regularly for any signs of wear and tear, and replace it if it's been involved in a significant impact.