i bought a used ipod how do i reset it

If after you restore it asks for a and Apple ID and password that is not yours,

iCloud: Find My iPhone Activation Lock in iOS 7

http://support.apple.com/kb/HT5818then return it for a refund or get the previous owner to remove his information

What to do before selling or giving away your iPhone, iPad, or iPod touch

Hi muziklloyd.

Try this; Slide and hold power slider button (green to grey) within the bar for at least 10 seconds.

Good luck!!

Connect it to your computer and Restore it as a new device in iTunes.