A network is a way for people to share information. You can hook up multiple computers and share information between them. You can share printers so if 15 computers were near one printer you could all use it. As a network grows they put in servers, places to store and share information not stored on your computer. Your network can become complex with the wired and wireless aspects, and the keeping it safe from intruders. You always see jobs for people with knowledge in networking. Besides Networks you have Intranets, kind of smilar to a private internet. but similar to a network. Sometimes lots of Networks maybe connected by one intranet. Hope this answers a little of your question without confusing and getting technical