In this tutorial, we learn how to quickly find your MAC address. This is the address that identifies your computer on a network. When you go to a campus, you will need to register your computer with a resnet so you can access the internet. To find the address, you will head to the Apple menu, then click 'about this MAC'. Click on the 'more' button and then click on 'network' and 'built in Ethernet'. This is the MAC address that you will need to register your computer, you may have a few of them. Write this down or copy it on your computer and you've got it.