Lots of videos! Check to see the version of ActionScript they're using - some of them aren't Flash CS5.5, but do have ActionScript 3, so, while the interface may look a bit different, the code will be the same.
range of different tutorials - including several for loading images / text from external files.
Check to see that you're looking at AS3 tutorials (some use older versions)
Wanting to get into pro audio? Jonah Guelzo continues his video series on what it takes to be a boom operator, including techniques and best practice. In the following tutorial you will learn how to create a tractor illustration. Learn how to build pixel perfect graphics in Adobe Illustrator CS5.
A set of tutorials for Action Script 3. Some of them are a little old, so predate Flash CS5.5, but, the ActionScript hasn't changed, so it's the same code; it's just Flash might look a little different.
Adobe Flash ActionScript 3.0 for Designers Tutorials Thus far we've been writing all of our scripts in the Script Pane of the Actions Window, however, more advanced coders also write their own classes or extend the functionality of existing ActionScript classes.
Before you start working with video in Flash Pro, it is important to understand the following information: Flash Pro can only play specific video formats. These include FLV, F4V, and MPEG video. For instructions on converting video in other formats, see Create video files for use in Flash.