中文在线帮助文档:http://livedocs.adobe.com/flex/3_cn/langref/
http://examples.adobe.com/flex3/componentexplorer/explorer.html。
http://examples.adobe.com/flex3/consulting/styleexplorer/Flex3StyleExplorer.html#
其他网站:
http://www.airia.cn/ 很好
http://bbs.actionscript3.cn
http://www.anyflex.cn/bbs
http://www.5uflash.com/flex-air
http://www.52ria.com
http://www.riachina.com
flash builder4
flash builder4 中文语言参考: http://help.adobe.com/zh_CN/AS3LCR/Flex_4.0
flash builder4 中文帮助文档:http://help.adobe.com/zh_CN/Flex/4.0/UsingFlashBuilder/index.html