This tutorial is intended for beginning programmers just starting to learn to use classes, or beginning to intermediate programmers migrating from Actionscript 2.0 to 3.0 that haven't done very much programming with classes yet. It will cover how to store your classes in your own packages, understanding the classpath, and how to write your first simple classes that are actually useful and reusable. The only prerequisite skills you need: The ability to create MovieClip symbols in Flash CS3, some knowledge of Actionscript 3.0's event listeners, the ability to browse your hard drive’s folder system, and the ability to create new folders.