IPhone 5 not connecting to MacBook Air?

I just got my iPhone 5 a few days ago and wanted to sync my iTunes music to it. When I tried to connect it, though, it acted as though nothing was plugged in. Finally, once I tried it later on in a separate location, my iPhone seemed to connect to the computer and was charging, but my MacBook still wasn't recognizing it, or acknowledging the fact that I plugged anything in. Nothing was popping up under devices in iTunes either. I'm really frustrated because that was one of the main reasons that I wanted the phone-- for the music. I have all of my playlists set up on iTunes, but it just won't recognize the stupid phone. I've been connecting it in the USB port with the cord that I use as a charger… Maybe I'm using the wrong cord? I don't see what else I could use for this. Can anybody help me?

Added (1). I have the most updated version of iTunes.

IPhone 5 not connecting to MacBook Air? - 1

I just got my iPhone 5 a few days ago and wanted to sync my iTunes music to it. When I tried to connect it, though, it acted as though nothing was plugged in. Finally, once I tried it later on in a separate location, my iPhone seemed to connect to the computer and was charging, but my MacBook still wasn't recognizing it, or acknowledging the fact that I plugged anything in. Nothing was popping up under devices in iTunes either. I'm really frustrated because that was one of the main reasons that I wanted the phone-- for the music. I have all of my playlists set up on iTunes, but it just won't recognize the stupid phone. I've been connecting it in the USB port with the cord that I use as a charger… Maybe I'm using the wrong cord? I don't see what else I could use for this. Can anybody help me?

My Iphone 4s only plays audio when I try to play videos?

I have downloaded many different video players through cydia including VLC and all i get is audio. I also converted the files to almost every file type and got the same. WHY IS THIS HAPPENING! I'm so frustrated that I left android to try out an iphone and this is what I get. Any help would be very appreciated.

Can you still get insurance on a preowned iphone?

Sprint has the option to upgrade to the iphone 16g 4s for half price if you get it preowned, but I have heard that you can't have the warranty or the insurance on the preowned phones. Is this true? The 8g iphone 4 is free but i have heard that there's not enough memory on that one?

How many gigs iphone 5 should i get?

Not the 64, but between 16 and 32… Heres y i'm conflicted:
1.price, 16 saves me 100 bucks
2. I have an 8 gig nano and 5 gigs are used
3. If i get the 16 i can keep my nano and just not have music on my phone
4. If i get 32 i can sell my nano and only have to worry about 1 device

so what would you do? An other points i need to consider?

IOS 6 and turning off the iPhone?

Ok so I have an iPhone 4. I recently updated the software to the new iOS 6 software. Before the update, I could turn my phone off while it was charging and now after the update it won't. Also, it doesn't make you "slide to power off" anymore. I wasn't sure if that was just one of the new features of the new update or what. If anyone else's does that, please let me know.

I just got an iphone 4 and I wanted to know if it was a smart idea to jailbreak?

I have an ipod that i jailbroke a while back and I very rarely had an issue with it the only thing was it slowed a slight bit. I wanna know if it would be smart to jailbreak my new iphone 4 because there are some features that i would like to have. If I should jailbreak, what is the best software to use for iphone 4 jailbreak.