Where is the internet, anyway? And how can you edit and save your website?
Two things you need for a website are a domain name (like www.yourname.com) and a web host. Clearly, your domain name is like your address (it's often called your "web address"), and your web host are the computers (or servers) that store your information.
Usually, you must pay some sort of fee for each of these. Fortunately, if you're a George Mason student, these things are already taken care of for you. Your domain name is simple: http://mason.gmu.edu/~your mason username/.
Mason has the hosting taken care of, too, but you will need an application, called a secure file transfer application, that can help you save your work and your files to the host. You can also do this with a basic command prompt, but file transfer applications are much easier to use.
Websites are created using different kinds of files, many of which are made of code. You'll need to generate your code and save those files with a text editor application.