How to Right Click on a MacBook
To right-click on a MacBook, press and hold the Control key as you click or tap the trackpad.
Place your cursor over what you want to click. Hold the control or ctrl key on your keyboard. It is located next to the option button on the bottom row of your keyboard. Click the object. If you are holding control when you click, the right-click menu will open. Click the Apple menu. Select System Preferences, and then open Keyboard & Mouse. Click the Trackpad tab. Under the Trackpad Gestures section, check the box labeled “Tap trackpad using two fingers for secondary click”. This will enable you to right-click using two fingers. Note: Depending on your OS X version, the labeling may vary. On older versions, the box is labeled “Secondary Click” and is located in the Two Fingers section. Place your cursor over what you want to click. Press two fingers to the trackpad to right-click an object. With the secondary click enabled, doing this will open the right-click menu. Decide if you want an external mouse. Heavy Excel users and others may prefer an external mouse. Get a mouse that has two buttons, or two-button capability. This is probably a mouse from a Windows PC. You may find it not as attractive to have a Windows mouse with your new MacBook, but it is practical. You can also use a Mac-branded option like the Magic Mouse. The Magic Mouse has a Secondary Click option available in the System Preferences. When enabled, this allows you to right-click just like on any other mouse. Connect the mouse. Plug that mouse into your USB on the Macbook or connect via Bluetooth, and you are good to go. 
Place your cursor over what you want to click. Click the object. Click the Apple menu. Click the Trackpad tab. Place your cursor over what you want to click. Decide if you want an external mouse. Get a mouse that has two buttons, or two-button capability. Connect the mouse. 