Using the Merida Matts J16 is easy. First, adjust the training wheels if your child needs them. Then, let your child sit on the bike and start pedaling. Use the front brake lever to slow down or stop when they're ready to learn more advanced braking. The rear coaster brake works automatically when they pedal backward. When riding, make sure your child wears a helmet. Keep the bike away from water and extreme temperatures. After each ride, check the tires for proper inflation. Every few months, lubricate the chain to keep it running smoothly. If you notice any loose parts, tighten them up or take the bike to a professional for maintenance.