学习网站

1. Adobe Flex开发人员中心
2. 一周学会 Flex 应用开发视频培训
3. Adobe AIR开发人员中心
4. The blog of Shane McCartney, an Aussie Flash Developer who's currently working in London

资源网站

1. Adobe Flash Player的正式版和Debug版的下载地址
2. Apache Flex
3. 提供了非常多的ActionScript 3编写的加密算法     
4. An ActionScript 3 Library that contains a number of classes and utilities for working with ActionScript? 3. These include classes for MD5 and SHA 1 hashing, Image encoders, and JSON serialization as well as general String, Number and Date APIs.

下面几篇博客也列出了一些比较不错的网站：