Hi Catnja,
Welcome to the Support Communities!
The first thing I would suggest is that you create a unique Apple ID for your son for his new iPad. This will keep his iCloud contacts, calendars, Game Center, Photo Stream, backups, etc. separate from yours. I would also suggest he create a new user account on your computer for the same reason. If you have made several iTunes Store purchases for your son, he can still sign in with your current Apple ID to access those purchases. The article below explains this in more detail. Be sure to read the Frequently Asked Questions section.
I would suggest you setup your son's iPad as New using the new Apple ID you create. Once it is all set up, then he can sign in to the iTunes Store with your current Apple ID and redownload past purchases to it.
If you don't have an Apple ID, you can create one at My Apple ID.
You should use (your son's) primary email address as his Apple ID.
You can use different Apple IDs for iCloud and Store purchases and still get all of the benefits of iCloud. Just follow these steps:
iPhone, iPad, or iPod touch:
- When you first set up your device with iOS 5 or later, enter the Apple ID you want to use with iCloud. If you skipped the setup assistant, sign in to Settings > iCloud and enter the Apple ID you’d like to use with iCloud.
- In Settings > iTunes and App Stores, sign in with the Apple ID you want to use for Store purchases. You may need to sign out first to change the Apple ID.
I have purchased music, apps, or books with multiple Apple IDs. How can I get all of this content onto my iOS device?
First, you need to copy all of your purchased content so it is on the same Mac or PC with iTunes. This computer should be the one you sync your device with. For more information on how to move your content, see these articles:
Next, authorize your computer to play content with each Apple ID in iTunes. Once your computer is authorized for all your content, it can be synced to your iPhone, iPad, or iPod touch.
Downloading past purchases from the iTunes Store, App Store, and iBooks Store
http://support.apple.com/kb/HT2519
Cheers,
- Judy