How to Use a MacBook Trackpad More Efficiently

Click the Apple menu. Scroll down to 'System Preferences.' Click on 'Trackpad' in the 'Hardware' pane of the 'System Preferences' window. Set specific trackpad gestures. Set the tracking speed, double-click speed and scrolling speed by dragging the sliders from 'Slow' to 'Fast.'
Choose finger quantity-specific actions. Check the box next to 'Tap to Click' under 'One Finger' to enable this function. Click the check box next to 'Two Fingers' and then set the options for two fingers, such as 'Scroll,' 'Rotate,' 'Pinch Open and Close,' 'Screen Zoom' and 'Secondary Click.' Check the box next to 'Swipe to Navigate' under 'Three Fingers,' or check 'Swipe Up/Down for Exposé' or 'Swipe Left/Right to Switch Applications.'
Watch video demos of the gestures to learn how to use each one. These are located in the pane to the left of the trackpad actions. Close 'System Preferences' when you've finished setting your preferences.
Click anywhere on your desktop or in your document by pointing and pressing your finger on the trackpad. Press down on the trackpad twice (rapidly) to open a document or application. Use the 'drag and drop' function by clicking your finger on the trackpad while dragging your finger across the surface of the trackpad.
Press the trackpad with two fingers to enable right-click or secondary-click functionality. Place two fingers on the trackpad to move them up or down to scroll vertically. Place two fingers on the trackpad and drag left to right to scroll horizontally. Hold your thumb and index finger open in the middle of the trackpad. Twist your fingers to rotate the photo.
Place your index finger and thumb together on the trackpad and then spread them apart to zoom into a photo or document. Close or pinch them together to zoom back out. Place three fingers on the trackpad and then scroll left to right to advance through Safari browser pages. Place four fingers on the trackpad and then swipe upward to close open windows and display a clutter-free desktop. Swipe four fingers upward to reopen all the windows. Swipe four fingers downward to open all windows on the desktop, or swipe left to right to open the 'Application Switcher.'
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How to Have Multiple Windows Open on One Monitor

Press the 'Tab' key on your keyboard while simultaneously pressing the Windows logo key. All open windows on your monitor will stack together in a series of icons, starting in the top left of the screen.
Click the 'Tab' key again to rotate through the icons until you're at the window that you want to view. Release the 'Tab' and Windows logo key to display the window in full view. Alternatively, use your mouse to click on a specific window in the stack.
Jump to a specific window as an alternative to stacking all open windows. Press and hold the 'Alt' key and the 'Tab' key on your keyboard. All open windows will shrink into a line of icons.
Hit the 'Tab' key to scroll through the windows until you're at the one that you want to view. Release the keys on your keyboard and the window will jump to the front of the screen in full size.
View windows side-by-side instead of cascading or jumping through the windows. This is ideal if you only want to view two or three windows simultaneously. Hold down the 'Ctrl' button on your keyboard and select the appropriate windows in your taskbar. This highlights all the windows. Right-click on any of them and select 'Show Windows Side by Side.'
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How to Connect Two Macbooks With a USB Cable (5 Steps)

Stand the MacBook Air on a table. Open the MacBook Air’s lid to reveal the LCD screen. Rotate the MacBook Air so that the LCD screen is facing you.
Pull the port access door on the right side of the MacBook Air down with your fingers. Insert the USB cable from the USB-to-Ethernet adapter into the USB slot that is closest to you inside of the port access door.
Stand the MacBook on the table to the left of the MacBook Air.
Plug one end of the Ethernet cable into the Ethernet port on the USB-to-Ethernet adapter that is connected to the MacBook Air.
Plug the other end of the Ethernet cable into the Ethernet port on the side of the MacBook.
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