This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Yes, there is quite a bit of free information about JBoss technologies on the internet. Some are decent, others are not worth the bandwidth necessary to transfer the bits to your browser. What we have done is distilled the information into a format that is easily readable. In addition, our book is focused on the practical side of things - we show you how to get things done.