ITunes won't sync with iPhone 5?

I have a new iPhone 5 and I have been trying to sync my media files on iTunes to it but it won't just work. The iPhone is version 6.0.2 and the iTunes is version 11 which is the latest. It detects the phone alrite but I can't just sync playlists to it. When I click on the device in iTunes, it doesn't show anything on the iPhone at all and doesn't give me the option to sync items to it either. I have unchecked 'prevent iPhones from sync-ing automatically' under the iTunes preference. I'm frustrated, please help me, step-by-step