Using the Kink Roaster is a breeze. Just help your child get on the bike, adjust the seat to a comfortable height between 15.5' and 18.5', and they're ready to start pedalling. The coaster brake is simple to use - just pedal backward to stop. If you choose to add a lever - style brake, make sure it's properly installed. When your child is riding, always ensure they wear a helmet for safety. As for maintenance, regularly check the tire pressure to keep the ride smooth. Also, look at the brakes to make sure they're working well. If you notice any loose parts, tighten them up. Store the bike in a dry place to prevent rusting.