Wi-Fi is primarily a local area networking (LAN) technology designed to provide in-building broadband coverage. It is based on IEEE 802.11 specification.
This tutorial gives you basic understanding on Wi-Fi.
This reference has been prepared for users to help them understand the concepts related to Wi-Fi
Before you start proceeding with this tutorial, I'm making an assumption that you are already aware about basic telecom concepts like LAN, Duplex, ISPs etc.
(1) Wi-Fi Quick Guide
A quick Wi-Fi reference guide.
(2) Wi-Fi Useful Resources
A collection of Wi-Fi Sites, Books and Articles is given at this page.
(3) Wi-Fi Tutorial in PDF
Download a quick Wi-Fi tutorial in PDF format.
NOTE: Wi-Fi™ is a registered trademarks of the Wi-Fi Alliance.