Wi-Fi an emerging technology being used these days widely. . Some Of you must be using it and some may be planning to use this technology. . 
That`s very nice but do you all know what`s in the technology? ? So here i am providing a brief journal i had posted on various sites and given talk on these topic at various places. .
Just read the journal and i am sure you will surely loose all your confusions and will really feel lucky to use the technology.
In case of any queries in the topic feel free to ask it and may be i got some untoched stones in the path 
Here is a paper for you to get it: click . . . .
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