Nothing to describe more about this. But Windows 8 users on laptop or desktop must know these shortcuts, otherwise they have to suffer alot 

Windows Key +  Show Desktop

Windows Key + C  Open Charms Menu

Windows Key + F  Charms Menu – Search

Windows Key + H  Charms Menu – Share

Windows Key + K  Charms Menu – Devices

Windows Key + I  Charms Menu – Settings

Windows Key + Q  Search For Installed Apps

Windows Key + W  Search Settings

Windows Key + Tab  Cycle through open Modern UI Apps

Windows Key + Shift + Tab  Cycle through open Modern UI Apps in reverse order

Windows Key + .  Snaps app to the right (split screen multitasking)

Windows Key + Shift + .  Snaps app to the left (split screen multitasking)

Windows Key + ,  Temporarily view desktop

Alt + F4 Quit Modern UI Apps

Windows Key + E  Launch Windows Explorer Window

Windows Key + L  Lock PC and go to lock screen

Windows Key + C  Cycle through icons on taskbar (press Enter to launch app)

Windows Key + X → Show Advanced Windows Settings Menu

Windows Key + E  Launch Windows Explorer Window

Windows Key + Page Down  Moves Start screen and apps to secondary monitor on the right

Windows Key + M  Minimize all Windows

Windows Key + Shift + M  Restore all minimized Windows

Windows Key + R  Open Run dialog box

Windows Key + Up Arrow  Maximize current window

Windows Key + Down Arrow  Minimize current window

Windows Key + Left Arrow  Maximize current window to left side of the screen

Windows Key + Right Arrow  Maximize current window to right side of the screen

Ctrl + Shift + Escape  Open Task Manager

Windows Key + Print Screen  Takes a Print Screen and saves it to your Pictures folder

Windows Key + Page Up  Moves Start screen and apps to secondary monitor on the left

Windows Key + Pause Break  Display System Properties

Shift + Delete  Permanently delete files without sending it to Recycle Bin

Windows Key + F1  Open Windows Help and Support

Windows Key + V  Cycle through notifications

Windows Key + Shift + V  Cycle through notifications in reverse order

Windows Key + 0 to 9  Launch/show app pinned to taskbar at indicated number

Windows Key + Shift + 0 to 9  Launch new instance of app pinned to taskbar at indicated number

Alt + Enter  Display Properties of selected item in File Explorer

Alt + Up Arrow  View upper level folder of current folder in File Explorer

Alt + Right Arrow  View next folder in File Explorer

Alt + Left Arrow  View previous folder in File Explorer

Windows Key + P  Choose secondary display modes

Windows Key + U  Open Ease of Access Center

Alt + Print  Screen Print Screen focused Window only

Windows Key + Spacebar  Switch input language and keyboard layout

Windows Key + Shift +Spacebar  Switch to previous input language and keyboard layout

Windows Key + Enter  Open Narrator

Windows Key + +  Zoom in using Magnifier

Windows Key +   Zoom out using Magnifier

Windows Key + Escape  Exit Magnifier