For more information about these gestures, choose Apple menu () > System Preferences, then click Trackpad. You can turn a gesture off, change the type of gesture, and learn which gestures work with your Mac.
Tap to click
Tap with one finger to click.
Secondary click (right-click)
Click or tap with two fingers.
Double-tap with two fingers to zoom in and back out of a webpage or PDF.
Slide two fingers up or down to scroll.1
Zoom in or out
Pinch with two fingers to zoom in or out.
Move two fingers around each other to rotate a photo or other item.