Online Safety
There are thousands of websites that will offer advice, the list I am going to share below is not exhaustive by any stretch of the imagination, but will give you a good place to start.
General advice for families
Kapersky (anti virus specialist)
Courses that children can work through to give advice
idea (I cannot link direct to badges, but I suggest starting on the safe online, e-safety and social media
badges.
Serious concerns, where to get help or report an incident
ThinkUKnow for teenagers (UK National Crime Agency)
ThinkUKnow for parents (UK National Crime Agency)