Helpful advice regarding E-Safety can be found at the following websites -

Parent Info - recently set up and a brilliant site for information for parents.  

http://parentinfo.org/

Common Sense Media Family Guides

https://www.commonsensemedia.org/guide/essential-school-tools

The Vodafone website for parenting is really useful.   

http://www.vodafone.com/content/parents/get-started.html

Safer Internet guides on social networking

http://www.saferinternet.org.uk/advice-and-resources/parents-and-carers/safety-tools-on-online-services

Thinkuknow for parents/carers

https://www.thinkuknow.co.uk/parents/