Well if your ability to find the right place to post your questions is anything like your retail abilities, you might consider another line of work. 🙂 This is the App Store forum, as in iPhone/Touch APPlications Store on iTunes. Not the APPly to work in an Apple Store forum. You do know about the App Store, yes?
As for being "versed in the ins and outs of the ipod touch as well as the ipod classic and the nano though they don't really vary in data too much"...better keep that line of thought to yourself if you do land an interview at an Apple Store. It pretty much makes no sense.
To work at an Apple store you absolutely need to know at least the basics of their computers. I would venture to say that few if any of their floor salespeople do not own a Mac computer. Owning a Touch is great, but is does not qualify you to sell computers.