I’ve recently switched from windows and linux to mac. Pretty much everything is different. Here are the shortcuts I can’t live without:
| On Windows, I used to… | On my Mac… |
|---|---|
| Home | Cmd+Left |
| End | Cmd+Right |
| Delete | fn+Backspace |
| Ctrl+Left | Alt+Left |
| Ctrl+Right | Alt+Right |
| Cut Ctrl+X | Cmd+X |
| Copy Ctrl+C | Cmd+C |
| Paste Ctrl+V | Cmd+V |
| PrintScreen | Cmd+Shift+3: print full screen to file on desktop |
| Cmd+Shift+4: print selected region to file on desktop | |
| Cmd+Shift+4 Space Click: print selected window, including shadow, to file on desktop | |
| Cmd+Ctrl+Shift+3: print full screen to clipboard | |
| Cmd+Ctrl+Shift+4: print selected region to clipboard | |
| Cmd+Ctrl+Shift+4 Space Click: print selected window, including shadow, to clipboard | |
| Cmd+Space grab Cmd+Shift+W Click Click Cmd+S: print selected window, without shadow, to file | |
| pipe | | Alt+Shift+L |
| tilde ~ | Alt+N Space |
| Ctrl+Alt+Del Force quit unresponsive application | Cmd+Alt+Esc Click |
| Cmd+Alt+Shift+Esc (hold for three seconds) | |
| Ctrl+Shift+Esc Task Manager | Cmd+Space Activity Monitor |
| F2 rename file | Enter |
| Enter open file | Cmd+Down |
| Windows+Left | install ShifIt and then Cmd+Alt+Ctrl+Left |
| Windows+Right | install ShifIt and then Cmd+Alt+Ctrl+Right |
| Del to delete a file | Cmd+Backspace |
| Windows+D to show desktop | fn+F11 |
| Insert to select a file in midnight commander | Ctrl+T |
See also Apple Support: Switching PC Habits.