Simply connect your computer to your external display with the proper cable/s (and adapters, if necessary) and make sure the monitor is powered on. Whether you are connecting your external monitor to your Mac notebook using HDMI, Mini DisplayPort, Thunderbolt, DVI, Mini-DVI, or Micro-DVI, the process is exactly the same. If you have no desire to get a separate Mac desktop computer, but want to either supersize your laptop's screen for gaming or need to get additional screen real estate while you work, then connecting your MacBook, MacBook Air, or MacBook Pro to an external display is the right call.
