One Finger

• Tap to click
• Dragging (drag lock): tap-tap-hold-drag
  

Two Fingers

• Scroll vertically and horizontally
• Secondary tap: tap screen with both fingers at the same time
• Right click
  

Three Fingers

• Swipe left or right to navigate

Four Fingers

• Swipe left or right for app switching
• Swipe up or down for Exposé