学习资料总汇：Flash Builder 4、Flex 4 SDK 以及 Flash Catalyst

Adobe Flex 4 Help
Using Flex 4
Using Flash Builder
Creating data-driven applications with Flex
Tutorials

Adobe Flex 4 Beta 语言参考
学习 Flash Builder 4 和 Flex 4 SDK（包含文章和视频教程，内容如下）
Learn about Flash Builder 4
Video: Introducing Flash Builder 4
Discover new design-centric, data-centric, and developer productivity features in the beta.
Tutorial:What’s New in Flash Builder 4
Learn about the three main feature themes in this release.
Resources: Flex for ColdFusion developers Learning Center
Explore the new data-centric development features of Flash Builder 4 beta.

Learn about Flex 4 SDK
Tutorial: What’s New in Flex 4 SDK
Learn what you’ll find as you explore the Flex 4 SDK beta.
Tutorial: Differences between Flex 3 SDK and Flex 4 SDK
Learn about the differences in architecture, components, layouts, use of states, and effects.
Tutorial: Effects in Adobe Flex 4 SDK ― Part 1: Basic Effects
See the basic infrastructure of the new effects in this release.

Working with Flash Builder 4
Video: Developer Productivity in Flash Builder 4
Presenter: David Zuckerman; Adobe
Video: Handling Large Recordsets in Flash Builder 4
Presenter: Tim Buntel; Adobe
Video: Debug and Test Code in Flash Builder 4
Presenter: David Zuckerman; Adobe
Video:Work with Flex 4 SDK in Flash Builder 4
Presenter: David Zuckerman; Adobe
Video: PHP Services in Flash Builder 4 (Part 1)
Presenter: Tom Lane; Adobe
Video: PHP Services in Flash Builder 4 (Part 2)
Presenter: Tom Lane; Adobe

Flash Builder、 Flex SDK以及Flash Catalyst视频教程（很多，进入看看吧）
GotoAndLearn上的两个关于Flash Catalyst 和 Flex 4 的视频教程：教程一、教程二
Adobe Flex 新特性和Flex 3迁移手册（PDF下载）
Flash Builder 4 新特性繁体介绍（感謝 RiS社群 提供好資源）
Kenshin的资料总汇