Hi,
the official phpMyAdmin book is now up to date with version 3.1:
http://www.packtpub.com/mastering-phpmyadmin-3-1-fourth-edition/book
The previous edition (about version 2.11) is still available because
some users can't upgrade their phpMyAdmin due to missing server
requirements:
http://www.packtpub.com/phpmyadmin-3rd-edition/book
Enjoy,
Marc Delisle