iCloud works with just about everything you do on just about every device you use — including your Mac or PC. So if you want to experience all iCloud has to offer, you’ll need to update a few things. Here’s how to get started.
For iPhone, iPad, and iPod touch
Get the iOS 6 Software Update.
To download iOS 6 for your iPhone, iPad, or iPod touch — so that these devices work with iCloud — just connect your device to your Mac or PC. iTunes takes care of the rest.
Learn more about the features of iOS 6
Set up iCloud on your devices.
Once you’ve downloaded iOS 6, it’s easy to set up iCloud exactly the way you want it.
Learn how to set up iCloud on your devices
Documents in the Cloud.
iCloud-enabled apps such as the latest versions of Pages, Keynote, and Numbers for iOS keep documents up to date on all your devices.
Learn more about Documents in the Cloud
Find My Friends.
Find My Friends is part of iCloud, too. And it’s available as a free download from the App Store.
Download Find My Friends from the App Store
For Mac
Update to OS X Mountain Lion 10.8
Download the most recent version of OS X Mountain Lion to get the most out of iCloud on your Mac. Just open the Mac App Store and click “Updates.”
Don’t have Mountain Lion yet? Download it today from the Mac App Store
Set up iCloud on your Mac.
Once your Mac is up to date, it’s easy to set things up.
Learn how to set up iCloud on your Mac
Photo Stream for Mac.
Select “Software Update...” from the 
menu or check the Mac App Store to get iPhoto 9.2 or Aperture 3.2.
Learn more about Photo Stream
For PC
Get the latest software.
For your PC to be iCloud-ready, you’ll need either Windows Vista (Service Pack 2) or Windows 7. Outlook 2007 or Outlook 2010 and an up-to-date version of your preferred browser are recommended for accessing your email, contacts, and calendars in iCloud.
Set up iCloud on your PC.
With a few steps, you can get iCloud up and running on your PC.
Learn how to set up iCloud on your PC
Install the latest Apple TV software.
It’s easy to update your Apple TV for iTunes in the Cloud and Photo Stream. Just turn it on and follow the onscreen instructions.