The best book or article on Digital Camera Raw capture and Adobe Camera Raw that I've read, written by The Expert(s). The first half of the book is a very clear and understandable coverage from what RAW capture is, high bit processing and through to using the Adobe Camera Raw plug-in.
The second half of the book is the "Industrial Strength Production Techniques" sub title, covering the integration of the ACR plug-in with Photoshop's File Browser and Actions to automate the mass conversion of digital camera RAW files, and how to write your own metadata templates (!).
In other words, it's aimed at the professional or very experienced Photoshop user. So although it is far better than many books aimed at the amateur home user, it is not a recipe book for "how to get the best image quality" out of your RAW shots.