If you have heard about VGA and HDMI but you do not know their differences, now is the time that you should become more familiar with them. First of all, VGA comes with an analog interface while HDMI is more current so it will come with a digital interface. Another main difference is that you can expect that the VGA will only have a video interface. If you are going to use HDMI, you are going to have both an audio and video interface.
The tools that you would need to make them work are also different. You need to use a cable when you are using a VGA while you need an adapter when you are working with HDMI.