I have an Apple Tv which I bought second hand and on the Home sharing section it has the persons email address, how do I change this email address to mine so that I could access my itunes?
Welcome to the Apple Community.
Just sign out and then back in with your own details.
It might be easiest just to go to setting and select retore to factory settings. That will clear out any previus info and give you a clean setup.
Retrieving data ...