my ipod say itunes and has a plug in a picture what do ido

helpmy ipod all the sudden had itunes and a plug on the bottom my friend told me i had to put it in ituens but i dont know how help i gave it to her and said shw will fix it she saidit might be a update even though i never accpeted a update but i do get this messages fromicloud and storage please anserw i am worried