Listmania!
InfoSec Book Stack
By an Amazon.com customer
Linksys WRT54G Ultimate HackingLinksys WRT54G Ultimate Hacking by Paul Asadoorian
Buy new: $26.37 / Used from: $24.89
CISA: Certified Information Systems Auditor Study GuideCISA: Certified Information Systems Auditor Study Guide by David L. Cannon
Buy used from: $5.50
While not structured like the official ISACA study guide, a much easier read that explains the areas you need to understand to pass the CISA exam.
Wi-Foo: The Secrets of Wireless HackingWi-Foo: The Secrets of Wireless Hacking by Andrew Vladimirov
Buy new: $31.49 / Used from: $9.94
One of the best wireless hacking books out there.