In addition to conversation, you may also want to implement software that allows you to set screen time limits or monitor your child's use of technology. You know your family best and what might be appropriate. Remember, school internet filtering does not apply to your home devices.
PC Magazine - Best Parental Control Software 2020
Screenagers - Parenting Apps - provides a variety of options for monitoring time spent as well as content on devices.
Parental Control Guide - Common Sense Media