My iPhone 5S won't connect to itunes?

I've been trying to connect my iPhone 5S to my Windows 8 computer for a couple days now, but it just won't work. It is recognized on my computer as Apple iPhone and all of the songs i downloaded on my phone downloaded on my iTunes when I connected it, but there's no option for me to sync or manage my iPhone from iTunes. Also, I have the latest version of iTunes and my iPhone is updated as well. Any thoughts on how I can fix this?

You cud just use Wi-Fi to download iv had an iPod touch for 4 years never once connected it to a computer! I have an iPhone 5c that I downloaded everything over Wi-Fi no problems