The Internet is a global network, connecting many smaller individual networks. For example, the computer in your dorm room is connected to another computer on campus. All the departments on campus are then connected to a larger network in the state. The Liberty University network is connected to regional, national and international networks.
The Internet is also a set of "protocols" that allow you to communicate with people, move files between computers, and find and share information. The protocols you are likely to use are: