People's “Primer” for 21st Century,
This is a tremendous resource, and I do not consider it outdated because it is still the best available orientation to Google. I do agree that there are online supplements that can update the knowledge in this book and cover emerging capabilities from Google.
Bottom line: Google is central to all our lives now, this book is a useful jump start to anyone who wishes to leverage all of Google, not just the 10% most people see. For advanced IT people, I recommend Stephen Arnold's book, “The Google Legacy,” available from Infonortics.co.uk, or at IOP '06 in January 2006.