The Designer's Graphic Stew is a quick resource for any designers looking for examples of different graphic elements used in action. It has loads of those examples in many variations, covering subjects like typography, picture cropping, colour combination, composition, layout, repeat patterns and many more.
The lessons on design techniques are really brief so they don't really teach much on design. Right at the end of the book is a gallery of real world examples with commentary on the design techniques used.
It's a pretty handy reference overall.
(There are more pictures of the book on my blog. Just visit my Amazon profile for the link.)