Since Adobe released Flex 3, Rich Internet Applications (RIAs) have become so popular that the market for RIA developers has grown considerably. Now, Flex 4 makes it easy for designers and developers unfamiliar with RIAs to become a part of the process, and Learning Flex 4 provides step-by-step lessons to help beginners create apps with Flex immediately. Written by Yahoo!'s resident Flex guru, Alaric Cole, this book offers you a hands-on approach to discovering exactly how Flex works. You'll learn the critical new features of Flex 4, such as user interface design, skinning, and other aspects aimed squarely at designers -- including the way Flex integrates with the design tools in Adobe's Creative Suite. Part of the popular Adobe Developer Library, Learning Flex 4 provides you with a clear, reliable, and authoritative way to learn Adobe's industry-leading RIA development tool.