Friends of ED. Many Apress and friends of ED books have source code or other downloads to accompany them.
Where can I find a book’s source code? If a book has downloads or source code to accompany it, a link will be found at the book’s information page under the Source Code/Downloads tab. Online Training Library: Training. Design Center - Tutorials on how to use Adobe and Macromedia products together. Adobe's bookmarks tagged with "tutorials" on del.icio.us.