zigbee lecture notes

Hi,

There has been published quite a few survey papers about the Zigbee wireless standard, which by the way was recently ratified.
You should look at the IEEE database and also make a general search on the web.
There are also some nice lecture notes available at the university sites.

All the best

http://www.chipcon.com/index.cfm?kat_ID=10&subkat_Id=80
http://www.microchip.com/zigbee
http://www.atmel.com/products/zigbee/

An allright site here:
http://www.palowireless.com/zigbee/tutorials.asp

All the best