It kinda depends what u want from your ipod. If u want some thing that is not so high-tec u should choose the ipod chuffle . If u want some thing that will do pretty much everything choose the ipod touch. If u listen to a variety o different songs choose the ipod classic. Go to an appel, apple store and I am sure they will help you!
If u don't care about finding a song, get the iPod Shuffle. If u want games, pictures, like shaking things, and want an 8 sjees, gig iPod, get the iPod nano. If u want everything, get an iPod Touch of an iPhone.