Why won't my iPhone 5 sync with iTunes?

My iPhone won't show up on iTunes. Any idea why it won't? I'm an iTard so I don't get this stuff. Any help would be much appreciated.

Added (1). Well it is charging so I would assume that the cord works.

What is so special about the iphone 5?

I've always been content with having a normal phone that can take calls and text but what is with the hype with the new iphone 5 that can make people camp for one for weeks and spend £500-700. I know it's thinner and lighter but other new features does it make it different from the 4s?

Any ringtone apps for iPhone that you don't have to use iTunes for?

So I jailbroke my iPhone and I downloaded a lot of music from my phone and not from iTunes and if I sync my iPhone to my iTunes then all the songs are gonna erase and I don't want them to do I was wondering if there where any ringtone maker apps that you don't have to use iTunes for and I don't care if it's not for free as long as I don't have to sync it into my computer

Why do people queue up for the Iphone?

I'm personally not getting it because I don't need half the features it provides, but if I were I would wait a week, stroll in with no hassle and get it in a few minutes, am I missing something here?

My iTunes get info isn't working?

Ok, so basically I downloaded a song off of YouTube and put it onto my iPhone, I then went onto the song in iTunes, went to the "get info" tab and wrote in the title of the song, the artist, the album and the artwork, I clicked ok. I then went onto my iPhone music and the only thing that was there was the name of the song, can somebody please help as to get the album name, the artwork and the artists name please, I have the latest iTunes and the version before io6 on my iPhone. My iPhone is also a 4.

How to unsync the contacts on my Iphone-4s from Facebook?

So I'm trying to text my friend for something and I notice I have all these peoples numbers that I didn't have before. So I keep scrolling through my contacts and I'm noticing all these weird names I've seen on Facebook.So, I guess my Facebook friends contacts synced to my phone. I really DON'T want all these contacts considering I have nearly 2000 Facebook friends. How do I unsync it?

Could I buy an iPhone in America and bring it back to the UK?

In may 2013 I'm travelling to Florida and was wondering what to buy over there. So I researched it and someone said apple products. My mum really would love an iPhone so I looked into it for her. If we bought it in England it would cost us £529. But on the us site it's only $199, and when you convert that to pounds it's a whole lot cheaper than £529! But if you were to buy it online on the us site then you have to pick what network provider you want. (E.g.AT&T) So would this apply if I bought this in store in Florida? By the way I would buy it in paper dollars to avoid the bank charges from converting it. Would my plan work?