With this book you'll have fun exploring the graphical and animation side of the Flex 4 SDK. There are other books out there on Flex, on Flex 4, and on RIA technologies in general, but they generally don't cover the techniques that help you write cooler applications. This book is specifically about the graphical and animation technologies in Flex 4 that enable better user experiences: the ""fun"" stuff.

Flex 4 is a powerful and flexible set of libraries that enable rich client applications running on the Flash Platform. In particular, Flex makes it much easier to write robust GUI applications than it otherwise might be with just the Flash authoring tool and APIs. For example, Flex provides a rich and extensible component library, databinding for easy communication between objects in the application, and the declarative MXML language that enables you to write your GUI logic in a very simple and straightforward way.