Photoshop's completely revamped workspace Smoother image display and quick zoom, including the new pixel grid view New Masks and Adjustments panels The Vibrance adjustment layer Hand-painting adjustments and using graduated filters in Camera Raw Enhanced Adobe Bridge
And much more. You'll also find out which features work well, and which aren't worth your time. Written with the clarity, humor, and objective scrutiny that are hallmarks of the Missing Manual series, Photoshop CS4: The Missing Manual is the friendly, thorough resource you need. Why settle for anything less?
"Lesa did a great job on the book, and in my mind, it is the new Photoshop Bible." -- Scott Kelby, Photoshop Insider