MakeUseOf posted a guide about upgrading to Windows 8.1

Are horror stories of how Windows 8.1 upgrades went horribly wrong keeping you from upgrading yourself? Yet you wish you could access some of Windows 8.1′s novelties, like better SkyDrive integration, improved desktop features, or you name it. This article summarizes the lessons we have learned, to help you navigate the potential pitfalls of upgrading to Windows 8.1, including a safety net that — in case things do go wrong — will allow you to return to Windows 8, as if nothing ever happened.

  How To Safely Upgrade To Windows 8.1