Some useful windows shortcuts

just have a look at this post.. might be a great help to you to operate your windows faster than anyone else...

Getting around Windows 8 Start Screen and Desktop
Win	Toggle between Desktop and Start Screen (or open Apps)
Ctrl+Tab	On Start Screen: Switch Between Start Window and All Apps Window
Win, then Ctrl+Tab	Open All Apps Window
Win, then start typing App Name	Search and execute Apps
Escape	Close Start Screen and go to Desktop
Win+E	Run Explorer on Desktop
Win+R	Execute Run on Desktop
Win+X	Open Power User Commands on Desktop
Alt+F4	Shutdown Windows
Win+L	Lock Computer
Win+F1	Open Windows Help

Switch between Apps and Windows
Alt+Tab and Alt+Shift+Tab	Cycle between all Windows and Apps. Press and hold Alt key before pressing Tab. ReleaseTab on Window/App you want to open. While tabbing, add Shift to key combination to go backwards.
Ctrl+Alt+Tab then Arrow Keys	Cycle between open Apps without having to keep Alt pressed. Press keys once, then use Arrowkeys and Enter to select Window/App.
Win+Tab and Win+Shift+Tab	Same as Alt+Tab, but only includes Apps only, not Windows on Desktop
Ctrl+Win+Tab, then Arrow keys	Same as Ctrl+Alt+Tab, but only includes Apps, not Desktop Windows

Power User Commands Shortcuts
These are also listed in the Power User Command Window. Sorted by their (subjective) importance.
Win+X, P	Control Panel
Win+X, T	Task Manager
Win+X, E	File Explorer (alternative: Win+e)
Win+X, R	Run (alternative: Win+r)
Win+X, D	Desktop (alternative: Win+d)
Win+X, F	Programs and Features
Win+X, C	Command Prompt
Win+X, A	Elevated Command Prompt (Admin)
Win+X, Y	System Information
Win+X, M	Device Manager
Win+X, G	Computer Management
Win+X, B	Mobility Center
Win+X, O	Power Options
Win+X, V	Event Viewer
Win+X, K	Disk Management
Win+X, S	Search

Managing Windows 8 Desktop Windows
Win	Go to desktop / switch between Desktop and Start Screen or Apps
Win+Arrow Up	Maximize Window across screen
Win+Arrow Down	Minimize Window (if Restored) or set Window to Restored (if Maximized)
Win+Shift+Arrow Up	Maximixe Window vertically
Win+Arrow Right/Arrow Left	Move Window to left/center/right. Works across multiple monitors
Win+Shift+Arrow Right/ Arrow Left"	Move window to left monitor / to right monitor when using multiple monitors
Alt+Space	Opens the title bar menu
F11	Turn full page view on or off
Alt+Q	Close Window

Windows Explorer

Basics
Win+E	Start Windows Explorer
Alt+Arrow Up	Go up one folder
Alt+Arrow Left/ Alt+Arrow Right	Go to previous folder / go to next folder
Tab/Shift+Tab	Switch focus forward/ backward between Address bar, Search Bar, Toolbar, Navigation Pane, and File List (Default is usually File List)
Alt+D or F4	Jump to the Address bar and select absolute address. Copy address with ctrl+c if desired
Ctrl+E or Ctrl+F	Jump to Search Box in Explorer
Ctrl+N	Open new instance of Windows Explorer
F11	Toggle full-screen mode

Navigate File List and Navigation Pane
Arrow Keys	Navigate between files and folders
Enter	Open folder or start application
Home/End	Jump to first / jump to last item
F2	Change the file name of active item
F2, then Arrow Left/ Arrow Right	Move one character to the left / to the right in item name
F2, then Ctrl+ Arrow Left/Arrow Right	Jump one word to the left / to the right of item name
F2, then Home /End	Jump to beginning / jump to end of item name
F2, then Ctrl+A	Select all/ complete object name including suffix (default excludes suffix)
Arrow Left/Arrow Right	Expand folder / collapse folder (navigation pane only)

File List Views
Alt+P	Display or hide Preview Pane
Alt+V then D	View details. Check View menu for more options
Alt+V then X	View extra-large icons. Check View menu for more options
Ctrl+mouse scroll wheel	Change size of icons

Select Items in File List and Navigation Pane
Shift+Arrow Up/ Arrow Down	Select multiple adjacent items (directly above or below)
Ctrl with Arrow keys and Space	Select multiple non-adjacent items. Hold ctrl, use arrow keys to move to next item, and pressspace to add/remove from selection
Ctrl+A	Select all
A ...Z and 1..9	Press the initial letter any item to jump to it. Continue typing the full name if multiple items start with the same letter

Manage Items in Explorer
Ctrl+C, ctrl+X, ctrl+V	Copy, Cut, Paste
Ctrl+Z	Undo an action
Ctrl+Y	Redo an action
Delete	Delete an item and place it into the Recycle Bin
Shift+Delete	Delete an item permanently without placing it into the Recycle Bin
Shift+F10	Activate context menu of active object. Replaces the right mouse button. Once in the context menu use arrow keys, a-z and enter to get to the selection
Ctrl+Shift+N	Create new folder
Alt+Enter	Open Properties dialog box

▲ up

The Rest
Win+U	Open Ease of Access Center
Win+P	Projector or second screen settings.
Alt+Shift	Change keyboard language layout if multiple language layouts are active*