Tutorial - Setup your Home wireless Network WLAN with WiFi

[lifetech]

Here's a good tutorial with case studies on creating LAN connection among 2 pcs or more than 2 pcs using wifi which is latest in wireless standards.

Cases include 2 pc connection, more than 2 pcs with an access point
(includes internet connection sharing)

Link : - Techtree.com India > Guides > Hardware Guides > Setting Up a Wi-Fi Home

[Lyte]

That is probably one of the better ones I've seen. It has a pretty good section on wifi security.

[lifetech]

Ya it becomes too insecure as no wire pinning is required as radiations are spread out naked. Some things like encryptions,modulation help them not be distorted.