Here are some videos that will help you to understand cyberbullying:
Cyberbullying is when people bully you online. This can be when people bully you on online games, through comments on youtube, through pictures or comments on pictures or even private messaging.
Prestonfield Digital Committee recommends that if you feel you are being cyberbullied you should screenshot to have evidence, report and block, switch off and tell an adult. If you are really worried you could call child line; 0800 1111.