LAN, WAN and WLAN

You said that it's a WLAN in your town? I assume you mean a few computers, connected wirelessly, in different buildings. That's really just getting a router, plus a wireless access point, hooking up wireless cards to the workstations, maybe getting Cantennas for the remote computers, and configuring them all to work in the same workgroup/domain. That's really it.

There are lots of website from you can learn about networking.. i.e. www.myhomenetwork.com, www.howstuffswork.com and many more...

net working is an unique. you will know that network can operate other computer. but you must connect with a cable.

if you want to learn networking you must have a tool to make a network in your home. then try make to connecty two computer in your home