HELP - My FIRST IPOD!!!

I just bought a used IPOD off some girl and she has left all her garbage on it, songs, contact and all that Jazz. Can someone PLEASE help me delete all of this? All I have is the IPOD, Ear Phones and the USB Plug that goes into my Laptop. Sorry I got no instructions and really wanted to use it tonight on a jog but I didnt want to listen to this Heavy Techno Stuff she has on here I really appreciate anyones help!!!

 

Thanks!!

Thank you guys all so much, I appreciate your help.
I have done what you said, downloaded the most recent version of ITunes and restored my NEW Ipod.
This is great, I can now start adding music.
To the comment about me "Stealing It", its really too bad people have to ask questions like this, just because I said I bought a used IPOD. I can understand your concerns, or maybe you had some bad luck yourself and had something stolen from you before. But I dont feel as though I need to show or explain myself to anyone. I know how much I have paid for it and I can sleep a restful sleep at night, thank you very much!

Again for those who left a helpful comment, I appreciate that and I will be enjoying my OWN Music this evening on my night run!

Thanks
T