How can I minimize a Modern UI app in Windows 8? I know I can use the Windows key or Alt+Tab, but there must be a way to do it with the mouse.
If you are looking for a way to task switch Modern UI/Metro app, akin to Alt+Tab but with the mouse, you can move your mouse to the upper right corner and then move it down. Up pops a Modern UI/Metro app task switcher UI.
Minimizing is a desktop metaphor and is not meaningful for Modern UI/Metro apps. Most Modern UI/Metro apps are automatically suspended when you switch away from them. Details found here.