How to Use Windows Update
Windows Update is a gas. It automatically searches for Windows 8 patches and upgrades from Microsoft and then applies them while you relax. This feature is A Good Thing because any piece of software as complex and powerful as Windows 8 needs frequent patching (especially because every hacker on the planet wants a piece of Microsoft).
The two methods of using Update are to either leave it completely to Windows 8 or run Windows Update manually.
The fully automatic way to use Windows Update
The Big Eight can take care of virtually the entire update process in the background so that you’re not bothered with it. Windows Update is set to run automatically by default, so there’s nothing you need to do.
The (somewhat) manual way to use Windows update
You can also run Windows Update at any time. Perhaps you’ve heard of an important patch that Microsoft has just released or you just want to impress your spouse. For whatever reason, make sure you’re logged in as an Administration user, and follow these steps:
Display the Charms bar and click the Search icon, and then click the Settings button and type Windows Update into the Search box.
Click the Windows Update button that appears in the Search results pane.
Click the Check for Updates Now button.
If updates are found, Windows Update informs you how many are pending and takes care of installing them automatically at the next restart.