The Firebird Book (Second Edition) released : printed and ebooks
The Firebird Book (Second Edition) is now available as a print on demand book (at createspace) in three parts,
Volume 1: Firebird Fundamentals
Volume 2: Developing with Firebird Data
Volume 3: Administering Firebird Servers and Databases
Also and also in electronic format (e-book) on the Developer DVD or as an immediate download. It covers Firebird upto Firebird V2.5.x.
Anybody purchasing the DVD gets a download link immediately,
and the DVD is sent later as a backup hard copy, along with a lot of other useful stuff.