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.
These are all free. And written from the source, Gavin and Christian, who also have a great easy to read writing style, so it isn't these geeks that write in geek and make it difficult to read, they are just geeks.