Below are useful and handy excel shortcut which can save your time by
  regularly practicing it while working on Excel.
  
  Short hands: You have to press keys one by one, not together.
  
  ALT  O  C  A    =    Auto fit Row with content
  
  ALT  H  A  C    =    Central Align in cell
  
  ALT  H  B  A    =    Apply All Border in selected cell
  
  ALT  H  B  N    =    Remove All Border in selected
    cell
  
  ALT  H  M  M    =    Merge selected cell
  
  ALT  H  A  C    =    Central Align in cell
  
  ALT H V V       =    Paste as Value
  
  F4                    =     Lock row or column in formula
  
  F12                  =    Open Save As dialogue box
  
  F7                    =     Spell check
  
  F2              
                 =      Edit selected cell
  
  
  
  
  
  Shortcuts: You have to press keys together.
  
  CTRL  D        
      =    Copy content from above cell
  
  CTRL  R         =    Copy content from right side cell
  
  CTRL SHIFT L =   Apply / Remove filter in selected row
  
  CTRL 1          =     Format cell window
  
  CTRL  F        =      Find window
  
  CTRL H        =       Replace window
  
  CTRL PGUP or PGDN = Switching between sheets
  
  CTRL Arrow key  = Go to last cell of data or Table
  
  CTRL Shift Arrow key  = Select upto last cell of data or Table
  
  Shift Space   =        Select Row
  
  CTRL Space   =      Select Column
  
  ALT    =      
         =    Auto sum
  CTRL  T            =   Convert Range into Table
  
  CTRL  ;            =   Insert today's date
  
  CTRL SHIFT  ; = Insert Time
  Which Shortcut you like the most? share in comment.