Can I upgrade my iphone on a contract?

I have no clue how it works, say i have only had the 4S for a few weeks then wanted to upgrade to the iphone 5? Is that possible, or do you have to wait a certain amount of time?

How to get the iPhone 5 working with iTunes?

So today I just bought the iPhone 5, and now I'm wanting to download some songs onto it. When I connect it to the computer, iTunes doesn't recognize it at all. Is there any way for me to have it showing on iTunes?
(Not sure where to ask this question, so I left it here)

Added (1). It maybe that, since it's been a while I updated iTunes

Is a Chromebook a good idea?

I think I've just about made my mind up on the next computer I'm buying. I've been considering a Chromebook recently and it offers basically all I should ever need. I'm looking at the $400 Samsung Series 5 550. Obviously, this won't be able to replace my desktop yet because I have an iPhone and an iPad that need syncing with iTunes and I also use Photoshop. Still, I can do most of my projects and the school newspaper on this and it will still work on my schools wireless network. Another plus is that I can type on it more quickly than I can on my iPad while taking notes in class. But what do you think? As in, am I going to regret this if I buy it?

Added (1). I was also looking at the $199 Acer Chromebooks, but I'm not sure about them.

Can I use my iPhone 5 while I'm in Taiwan?

I'm going on vacation next week to Taiwan for a week, and I was wondering if I'm still able to use my data while I'm in Taiwan? Like, will I be able to use my apps, and how much will it be to call/text? I'm not really educated about cell phones and plans.

Can't remember old iphone passcode?

I have my old iphone 3G from before I had my new iphone 4… But there's one problem, many family photos/contacts/notes/ account info is on the iPhone 3G BUT I CAN'T REMEMBER THE PASSCODE! The only thing I know is that the top lock button doesn't work and it's jailbroken… Is there anyway to get into my phone to turn the passcode off so I don't lose over a year of my life?

How to know if my Iphone is unlocked?

A while back I found an ATT iPhone 4 and recently decided to jailbreak it. I want to use my iPhone 4 on T-mobile, so how do I know if its unlocked?