http://www.childnet.com/ufiles/Keeping-Young-Children-Safe-Online.pdf
http://www.childnet.com/resources/the-adventures-of-kara-winston-and-the-smart-crew/watch-full-movie
http://stannesschool.org.uk/images/admin_staff/pdfs/Miscellaneous/B_SIDs_Top_Tips.pdf
http://stannesschool.org.uk/images/admin_staff/pdfs/Miscellaneous/KidSMART-poster.pdf
http://www.kidsmart.org.uk/teachers/ks1/sources/index.htm
http://www.kidsmart.org.uk/teachers/ks1/sourcesDuck/projet/DigiDuck-eBook.pdf
https://www.thinkuknow.co.uk/Global/parents/5/Lee_and_Kim_Storybook.pdf
Here are links to some search websites that are specifically designed for children to use.
Google Junior: https://www.googlejunior.com/
Simple Wikipedia: https://simple.wikipedia.org/wiki/Main_Page
DK Findout: http://www.dkfindout.com/uk/
Counselling Directory is a confidential service that encourages those in distress to seek help. The directory contains information on many different types of distress, as well as articles, news, and events. Take a look at their E-Safety/Staying Safe Online page for some more top tips on having the safest online persona:
http://www.counselling-directory.org.uk/staying-safe-online.html