Changing Local Account to Windows Account
You can easily link your local account to Windows account and enjoy all the perks of online sync and backup through SkyDrive. If you have chosen local account while configuring Windows, it’s not too late. Users on local accounts, on the other hand, are treated as second-class citizens and don’t get the online sync facilities which can be very helpful if you have multiple devices running Windows 8 on it, and also if you are looking for a way to sync all your apps and settings automatically. If you choose the Microsoft account, you will have to provide your Windows login credentials, and you would be able to sync all your settings, Metro Apps from the stores and SkyDrive files seamlessly.
While installing Windows 8 (the preview builds), right before the setup is about to make your PC ready it asks you whether you would like to use a local account or the Microsoft account to administer the computer.