Learn how to work with PHP in Flex
Recently I wrote a two part series on building a Blog in Flex using PHP for the server-side part. These articles are available in the Flash and Flex Developers Magazine in your local book stores. However I have been informed that part 2 is available for free download (newsletter registration required). Earlier in the year part 1 was available for free, so it may still be on their site, let me know if you find it.
Also be on the watch for a new article in an upcoming issue that teaches you how to build a cool Flash application using Flickr and Yahoo! Pipes. Not exactly sure which issue it will be in, but keep an eye on my twitter page for more details when they are available.