Computer networking connects multiple computers to share resources and information. There are different types of networks including local area networks (LANs), campus area networks (CANs), wide area networks (WANs), virtual private networks (VPNs), intranets and extranets. A LAN covers a small physical area like a home, office or school to connect computers and share resources and internet access. Networking in businesses, schools and governments helps create organization and communication through file sharing, internet access and more.