I pod touch

I would like to buy the I-pod touch. Do you know the I-pod touch? I have some reasons I want to buy this. If I have the I-pod touch, I will listen to a lot of music anywhere, watch a lot of movies anytime, use the enternet and play many games. If I have the I-pod touch, I can use many functions.I think that if I have this one, I don"t need to have any electrical equipment,such as a cell phone and a laptop.