Window Shortcut:-
To minimize all the opened windows at once Window key +D . (Window key is adjacent to your left Ctrl button).
Open directly Windows explorer Window + E
Open Run dialogue box Windows + R
Close active window Alt + F4
To rename a selected folder/file F2
MS Word Shortcuts:-
To Change case in MS Word Shift+F3
To Paste un-formatted text in MS Word Ctrl+Alt+V
MS Excel Shortcuts:-
To Show formula in Cells in MS Excel Ctrl + `
To Add a row/column in MS Excel Ctrl + +
To delete a row/column in MS Excel Ctrl + -
PHOTOSHOP Shortcuts:-
To Transform Image Ctrl + T
To De Select Selected Image Ctrl +D