Detailed Answer
Essential shortcuts for productivity (Windows/Mac):
- Copy: Ctrl+C (Cmd+C)
- Paste: Ctrl+V (Cmd+V)
- Cut: Ctrl+X
- Undo: Ctrl+Z
- Select all: Ctrl+A
- Save: Ctrl+S
- Find: Ctrl+F
- New tab: Ctrl+T
- Close tab: Ctrl+W
- Switch tabs: Ctrl+Tab / Ctrl+Shift+Tab
- Switch app: Alt+Tab (Cmd+Tab)
- Bold: Ctrl+B
- Italic: Ctrl+I
- Underline: Ctrl+U
Learning these eliminates mouse movement, saving seconds per action. Over a day, that's 10-15 minutes saved. Practice one shortcut per week until automatic. For typists, Ctrl+Backspace (delete entire word) and Ctrl+Left/Right (move by word) are especially valuable.