Adobe Flex 4: Training from the Source, Volume 2 is the continuation of the best-selling and most trusted resource for learning about Adobe Flex. Written by a team of authors with practical experience as consultants, mentors and developers of courseware, this book/CD uses project-based tutorials, and is designed to teach intermediate-level Flex developers the details of building and architecting real-world rich Internet applications (RIAs) using Flash Builder incorporating MXML and ActionScript 3.0. The book includes a CD that contains all the files used in the lessons, plus completed projects for comparison. This latest edition includes complete coverage of new Flex 4 features such as the Spark skinning and component architecture, and much more. This book builds on the skills taught in Adobe Flex 4: Training from the Source, Volume 1, and leads the reader through adding advanced features to the application begun in the earlier volume. This second volume covers subjects like working with Web Services, visualizing data, adding transitions and behaviors to UIs, printing, using shared objects, and error handling.