Q: I lost My ipod

Did you alreadyhave the FIndMyiPod feature turned on?  Wifi also has to be on an connected.

Go to iCloud, sign in and go to FindMyiPhone. If not shown see:

iCloud: Troubleshooting Find My iPhone, iPad, iPod touch, or Mac

The feature is permentently removed if the iPod is restored. So it is not that useful if stolen.

Report to police and change the passwords for all account used on the iPod.

Apple will noth lep

Then you will have to find it the old fashioned way. The same way you would use if you lost a glove.