General

ActionWindowsMac
SaveCtrl +S

⌘  + S

QuitEscape
UndoCtrl + Z⌘  + Z
RedoCtrl + Y⌘ + Y
CopyCtrl + C⌘ + C
PasteCtrl + V⌘ + V
CutCtrl + X⌘ + X

Selection

ActionWindowsMac
Select next cellTab
Select previous cellShift + Tab
Select cell belowEnter
Select cell aboveShift + Enter
Select all cellsCtrl + A⌘ + A
Select page upCtrl + Shift + Up arrow⌘+ Shift + Up arrow
Select page downCtrl + Shift + Down arrow⌘+ Shift + Down arrow
Extends selection on rightShift + Right arrow
Extends selection on leftShift + Left arrow
Extends selection aboveShift + Up arrow
Extends selection belowShift + Down arrow

Editing

ActionWindowsMac
Edit selected cellF2
Quit edit modeEchap
Clear selected cells contentDelete or Backspace

Document structure

ActionWindowsMac
Insert a column beforeAlt + Left arrow
Insert a column afterAlt + Right arrow
Insert a row beforeAlt + Up arrow
Insert a row afterAlt + Down arrow

Formatting

ActionWindowsMac
BoldCtrl + B⌘ + B
ItalicCtrl + I⌘  + I
UnderlineCtrl + U⌘  + U
StrikethroughAlt + Shift + 8