Using the Bell Nomad 2 MIPS bike helmet is easy. First, adjust the Ergo Fit dial to get a snug and comfortable fit on your head. You can remove the visor if you don't need it, for example, when cycling indoors or in less sunny conditions. When riding, always make sure the helmet is securely fastened. As for maintenance, keep it clean by wiping it with a soft, damp cloth. Don't use harsh chemicals as they might damage the shell or the padding. Store it in a cool, dry place away from direct sunlight. Check the helmet regularly for any signs of damage, like cracks or loose parts. If you notice any issues, it's time to get a new helmet to ensure your safety on the trails.