It's time for self-promotion again: Glenn's latest print book is Take Control of Your AirPort Network: This 160-page title ($16.99, discounted at Amazon to $11.89) covers all the ins and outs of using Apple's AirPort technology and using Wi-Fi with Mac OS X. I include a huge appendix that covers configuring AirPort Express, and also include details on getting Windows XP and Mac OS 9 to work with Mac OS X and AirPort Extreme/Express. The book has troubleshooting details, and a long section on setting up your own dynamic addressing using hardware or software.
This is the print edition of the same-named ebook (PDF)--there was enough interest in the ebook to turn it into a print book. If you follow the ebook link, you can download a 29-page excerpt of the book to get a better sense of the print and electronic editions.
Last year, Adam Engst and I wrote The Wireless Networking Starter Kit, which is still current for designing, configuring, and understanding wireless networks. It's also available in both print and electronic form.
Updates on AirPort networking can be found at my separate AirPort blog.