Set up Actionscript 3 Development Environment

If you are new to Actionscript and its development, you may ponder over what I need to write a pure Actionscript application. With advent of Flex, flash programming is getting easier. You don't have to be a Flash CS guru to write flash applications. All you need is to set up the actionscript development environment using Flex SDK, and use your favorite text editors to write the programs and compile them into flash applications from commandline. Of course, you need some kind of programming background.
Here is what you need to basically get you going:

1. A text editor so that you can write some code. Notepad, Textpad, VI, Emacs and JEdit etc. Any your favorite editors should do the work for you
2. Flex SDK, you can download Flex 3 SDK from here
3. Adobe Flash Player - Debugger versions for Flex and Flash developers. You can download it from here
4. Unzip Flex SDK into a directory, and add Flex's bin directory to your PATH so that you can invoke mxmlc and other Flex tools from commandline
5. Actionscript documentations, I am sure you need to read some documents so that you will get familar with the language if you are a serious player. You can read or download a copy from adobe
   

Now you are all set, and start writing your actionscript programms and compile them.
I have a simple tutorial on Create a Simple and Pure ActionScript 3 Application. It should be simple enough to follow. Good luck