Some Shortcut Key that You should Know :-

Shortcut Keys Description
Delete To delete word from Forward Direction
Backspace To delete word from backward direction
Alt + Tab To Switch Program
Alt + f4 To turn off Computer / To close the program directly
Window + D To minimize all open Window
Ctrl + Shift + N To create a New Folder
F12 To Save As
Ctrl + N For New Document
Ctrl + Alt + Delete To Open Task Manager
Ctrl + Z undo
Ctrl + Y Redo
Ctrl + Window + Right/Left To Switch Window
Window + R PSR (Problem step Recorder)
Shift + Arrow Button To Select Text
Ctrl + A To select all text
Triple Click To Select a Paragraph
Ctrl + Shift + Down Arrow To Select a Paragraph
Shift + Down Arrow / Up Arrow To Select a Line
Alt + Select Area To Select Vertically
Ctrl + One Click To Select Sentence
Ctrl + Double Click To Select a Specific Word
Shift + Point your Cursor To Select Area