Hey! Welcome to the community 😄
What type of iPod do you have?
If it is a classic, nano or shuffle then you can only use Spotify to sync local files which you already own to the device, not any content from the Spotify catalogue. Have a read at this topic for full details.
thank you! ok, it is a nano, so i guess it won't work that way. is it possible to sync spotify to my iphone library and then transfer these songs to itunes to transfer to my nano?
No, it is not possible to use content from Spotify in any scenario outside of the Spotify application which downloaded it.
If you have premium, you can use the Spotify App on your iPhone, but any offline downloaded content is only accessible inside the Spotify app.