Window key + E
Many of you guy always try to open the file explorer in windows by dragging your mouse cursor on to the file icon and then clicking on it. I know it's not a time taking process but by using this key you can do this job much quicker and i think it's probably better then using mouse and touch pad.Ctrl+Shift+T
If you accidentally close your tab in you internet browsers. Don't worry , you don't need to go to the history and open that tab again. Just press Ctrl+Shift+T to open the last closed tab. ( Press this now to test it ).Ctrl+Shift+Esc
Many of us use Alt+Ctrl+Delete key to open a menu when we select task manager whenever an application got hanged. and then we select that application and click on end task. (a long process ) . Try to press this key Ctrl+Shift+Esc to open the task manager directly.Alt+Tab
You don't need to go to task bar and click on the app icon to switch between apps that you are working on. Just press Alt+Tab to quickly switch between the opened apps. ( Try this ).Ctrl + F4
Many of you probably know about the Alt + F4 key to close currently opened application. What if i want to close one single tab in my browser or one single document that is currently opened along with others. This key could help in this matter.Win + Plus sign (+) / win + Esc
Want to open magnifier? Press Win + plus sign (+) . You can also close the magnifier quickly by using Win + Esc key.These are some useful short keys that i had in my mind. You might know some of them or all of them or probably non of them. Let me know in the comment section which one did you like the most and which one you already know about.