So Windows 10 has been out for over a year now and still receiving mixed reviews. I guess it’s like Marmite? For me, I like it and even better when using it with a touchscreen, the two just work very well with each other. But if you don’t have the luxury of a touchscreen and are still using a keyboard, here’s some handy keyboard Shortcut Keys:

Shortcut Description
Windows keywin10 Open and close the Start menu.
win10+1, +2, etc. Switch to the desktop and launch the nth application in the taskbar. For example, +1 launches whichever application is first in the list, numbered from left to right.
win10+A Open the action centre.
win10+B Highlight the notification area.
win10+C Launch Cortana into listening mode.[1] Users can begin to speak to Cortana immediately.
win10+D Switch between Show Desktop (hides/shows any applications and other windows) and the previous state.
win10+E Switch to the desktop and launch File Explorer with the Quick Access tab displayed.
win10+H Open the Share  charm.
win10+I Open the Settings  app.
win10+K Open the Connect pane to connect to wireless displays and audio devices.
win10+L Lock the device and go to the Lock screen.
win10+M Switch to the desktop and minimize all open windows.
win10+O Lock device orientation.
win10+P Open the Project pane to search and connect to external displays and projectors.
win10+R Display the Run dialog box.
win10+S Launch Cortana.[2] Users can begin to type a query immediately.
win10+T Cycle through the apps on the taskbar.
win10+U Launch the Ease of Access Center.
win10+V Cycle through notifications.
win10+X Open the advanced menu in the lower-left corner of the screen.
win10+Z Open the app-specific command bar.
win10+ENTER Launch Narrator.
win10+SPACEBAR Switch input language and keyboard layout.
win10+TAB Open Task view.
win10+, Peek at the desktop.
win10+Plus Sign Zoom in.
win10+Minus Sign Zoom out.
win10+ESCAPE Close Magnifier.
win10+LEFT ARROW Dock the active window to the left half of the monitor.
win10+RIGHT ARROW Dock the active window to the right half of the monitor.
win10+UP ARROW Maximize the active window vertically and horizontally.
win10+DOWN ARROW Restore or minimize the active window.
win10+SHIFT+UP ARROW Maximize the active window vertically, maintaining the current width.
win10+SHIFT+ DOWN ARROW Restore or minimize the active window vertically, maintaining the current width.
win10+SHIFT+LEFT ARROW With multiple monitors, move the active window to the monitor on the left.
win10+SHIFT+RIGHT ARROW With multiple monitors, move the active window to the monitor on the right.
win10+HOME Minimize all nonactive windows; restore on second keystroke.
win10+PRNT SCRN Take a picture of the screen and place it in the Computer>Pictures>Screenshots folder.
win10+CTRL+LEFT/RIGHT arrow Switch to the next or previous virtual desktop.
win10+CTRL+D Create a new virtual desktop.
win10+CTRL+F4 Close the current virtual desktop.
win10+? Launch the Windows Feedback App.

[1] If Cortana is unavailable or disabled, this shortcut has no function.

[2] Cortana is only available in certain countries/regions, and some Cortana features might not be available everywhere. If Cortana is unavailable or disabled, this command opens Search.

Thanks to Microsoft Download Centre for the information.