Tour de Flex is now updated for Flex 4 with tons of new samples. Also, you'll notice that there are links to the online help in English, French, German, Russian, Chinese and Japanese for every Flex 4 component!
Tour de Flex is a desktop application for exploring Flex capabilities and resources, including the core Flex components, Adobe AIR, data integration, and a variety of third-party components, effects, skins, and more.
If you are not viewing this page from Tour de Flex, we suggest you go install Tour de Flex.