Take your wire that came with the iPhone and plug it into the USB port, from there it will automatically sync.
Three steps can help you:
Step 1: Run Software, Connect iPhone
Run iPod to iPod Transfer, connect your iPhone to computer.
Step 2: Select the Files from List
In the left panel, you can select the files you want to sync to your iTunes. Click the "Export" button at the top to begin to the transfer. This software also helps you to Transfer Videos from iPhone to Computer.
Step 3: Click Export to Computer
Set things up just as I have shown and that's all there is to it. Choose "Export to iTunes Only" and press the "OK"button at the bottom, the program will start to sync iPhone to iTunes on computer.
http://www.ipodtoipodtransfer.org/how-to/sync-iphone-to-itunes.html
For more details you can see this link.
You can’t install apps onto an iPhone from iTunes anymore. Apple removed app management from iTunes in newer versions. To get apps on your iPhone, open the App Store on the device, search for the app, and tap Get or the download button. If you previously downloaded apps with the same Apple ID, you can find them under App Store > your profile > Purchased. If you’re using an older version of iTunes that still supports apps, you may be able to sync them through iTunes, but for most users today, the App Store is the way to go.
Sync it to iTunes.
Plug in your iPhone. Connect to iTunes. Click Sync.
After you buy the music in the itunes store you have to sync it.
I had this problem too. I had iTunes installed already, but when I tried to sync my iPhone, nothing came up on my iPhone screen. I quit iTunes, and unplugged my iPhone, then plugged it back in and opened iTunes again.
You have to Sync it with iTunes.
If you want to add apps to your iPhone from a computer, the easiest way is to use the App Store directly on your iPhone. Apple no longer lets you install new apps through iTunes like before. If you already have apps downloaded on your computer or need to manage iPhone data, you can use tools like MobiKin Assistant for iOS to manage backups, transfers, and other iPhone content. For apps themselves, though, you’ll usually need to download them from the App Store on your device.
Through iTunes on your PC or Mac. In there you sync it, with your iPhone.
You can as long as you have authorised your MacBook via iTunes.
Yeah, put it into Itunes and sync it with iphone
Well, to install iTunes on your computer you don't have to use your iPhone. You just go to the Apple website, and search iTunes, and then you can just download it from there. If you want to sync your iPhone with iTunes to back up your content, you just sign in with your Apple ID (if you have an iPhone you should already have one), then plug in your iPhone and press sync.
You Have To Have Access To A Computer Well You Download Itunes Then Sync Your Iphone To There From Buying From The Itunes Store Or You Download Straight From Your Iphone Itunes By Buying Itunes Card Or Having A Credit Card