i dont know how to sync music to my ipod. i need help

You can sync music to the iPod by connecting it your computer, selecting the iPod on the left-hand side of your computer's iTunes, and then using the Music tab on the right-hand side of iTunes to select which of your iTunes music library to sync to it. There are some instructions on syncin music on this page : http://support.apple.com/kb/HT1351

You can also download a copy of the iPod manual from here : http://support.apple.com/manuals/ipod/#ipodtouch