几乎很近没有关注 RIA 了，也并有去过 Riacn.com，但最近看到了这个：Lynda.com.Flex.2.Essential.Training-CFE，下面是介绍，有关注 Flex2 的朋友可以通过 BT 等软件搜索到这张教程光盘。
Adobe’s Flex 2 provides an authoring environment in which users can
easily build rich desktop applications that leverage the power of the
Web. Flex requires no prior knowledge of Flash, but uses the data
visualization prowess of Flash through components that are easy to use
and create. Flex tackles four key challenges in Web development:
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