One of the more annoying behaviors in Windows 8 and 8.1 is that all of your files are set to open in native Metro-style apps. For instance, if you're working on the desktop and view a picture or PDF, it opens full screen in the associated app. If you're working on a traditional computer without a touchscreen, this is frustrating to say the least. Especially if you're on a laptop with a single screen. Here's how to take control of your Windows 8 system and make your files open in the desktop programs you want them to.
Read the full article: How to make Windows 8 Metro open files on the desktop