How to Swipe between full-screen apps:Swipe with three fingers to the left or right to switch between any apps that you have open in full-screen mode.
How to Tap to zoom: Tap the trackpad with two fingers simultaneously to zoom in on a page in Safari or a PDF.
How to Swipe to navigate: Swipe with two fingers to the left or right to flip through Web pages and documents.
How to Open Launchpad: Pinch toward the center of the trackpad with your thumb placed in either the bottom left or bottom right corner and three fingers in the opposite corner above. The Launchpad lets you see your installed apps and launch them with a single click.
How to Show desktop: Spread your thumb and three fingers apart to show the desktop. This gesture is the exact opposite of the previous gesture.
How to Look up: Tap a word with three fingers to immediately look up the word’s definition, synonym and more.
How to Three-finger drag: Slide three fingers around the trackpad when you’ve positioned the cursor at the top of the window to drag the window around the screen.
How to Show Safari tabs: Pinch with two fingers to see all of your Safari tabs simultaneously, and then swipe left or right with two fingers to scroll between the tabs.