While working on his book Photoshop Lightroom 3: Visual QuickStart Guide, Nolan Hester figured he'd seen all the secrets with the Lightroom 3 betas. But when the final version of the program arrived, his heart skipped a beat.
Also see: Real World Digital Photography, 3rd Edition, by Katrin Eismann, Sean Duggan, and Tim Grey
Real World Adobe Photoshop CS5 for Photographers by Conrad Chavez
This free chapter is from Photoshop Lightroom 3: Visual QuickStart Guide
http://www.graphic-design.com/bookshelf/photoshop-books/new-lightroom-still-holds-surprises