Q: How do I run device finder to find my ipod touch?

Go here, iCloud, log in and click on FindMyiPhone.

You may also need this:

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

The FindMyiPhone app only allows you to find anohter iOS device. The FindMyiPod has to be already turned on in Settings>iCloud. and wifi has to be on and connected. Also, the find feature is permenently deleted if the iPod is restored.