i need to delete all the music and add new music. not sure how to do that.

Hello dolphinrr

Check out the following article to setup and configure your iPod for syncing. You may want to make a playlist and the select sync playlists to get the music that you want on the iPod.

iTunes 11 for Windows: Set up syncing for iPod, iPhone, or iPad

http://support.apple.com/kb/PH12313

Thanks for using Apple Support Communities.

Regards,

-Norm G.