How to locate Itunes account from ipod days?

CodyontheBeach wrote:

I don't even think there were appleIDs, at least not that I recall.

I'm fairly certain there were Apple IDs.

The chances are that your ID was your email address as that is what Apple encouraged. Alternatively, try this Apple article, If you’ve forgotten your Apple ID – Apple Support (UK) which gives the steps required to find it again. If I recall correctly, the sign in page will have a link to help you once you've got your ID but forgotten your password.

If you log into the iTunes Store with your Apple ID (or the one used at the time), you can redownload old purchases.