Yesterday I gave a talk titled "Welcome to the Internet" ("Добро пожаловать в Интернет" in Russian):
https://www.youtube.com/watch?v=QAP6B39NhCc
I talked about the internet, its origins, the protocol stack as well as dangers and challenges internet users face. I tried to explain everything in the way that even a child could grasp.
(And yes, the title of the talk is a reference to this Bo Burnham's song: https://youtu.be/k1BneeJTDcU)