Lynda.com Home and Small Office Networking Interactive Tutorial
Do you have more than one computer in your home or small office? If you do, you need a network! Using the network, you can share a single internet connection between all your computers, transfer files with a few mouse clicks rather than a pile of floppy disks, and work wirelessly with your laptop from anywhere in the room. You can also use your network for sharing printers, playing music, and vanquishing the enemy in multi player online games.

Topics include:
Wired vs. wireless
Router administration
Types of broadband services
Internet connection sharing
File sharing & printer sharing
Wireless encryption and security
Network troubleshooting