This is an excellent peek into the low-level infrastructure of 802.11 radios. The micro controller enthusiast as well as the 802.11 WiFi-curious should find this book to hold many fascinating details. Fred takes the reader though his thought process and lab notes as he decodes and explains, down to the chip level, how the typical PRISM-based 802.11 wireless card works (Intersil developed then sold to Conexant the PRISM chip set used in millions of 802.11 wireless network card). In the process, Fred's light-hearted style of writing entertains the reader with trivia. Linux experts will, of course, realize that this is old hat for an x86-based Linux system. Fred acknowledges the fine contributions of the Linux word and adds his genius in the 8/16-bit micro controller world. The key difference in Fred's book as compared to the Linux driver code is the simplicity of Fred's explanations. The reader is given code that he or she can apply to the real world.