Over the 31 chapters of this book, we've explored many different programming tools and techniques; it's now up to you to experiment with them. Take what you've learned and explore your own ideas and projects. If you've previously spent most of your time in ActionScript, don't feel limited to it. Most of the concepts in this book are applicable to many other languages. Your ActionScript training will serve you well in Java, C++, Perl, and Visual Basic, just to name a few. Don't be afraid to venture into that territory.
Programming is an art form. As such, it comes with all the frustrations and elation of sculpture, writing, painting, or music. And it's subject to the primary law of creativity: there is no final destination. Every day that you program, you'll express something new and learn more along the way. The process never stops. So while this book may be over, your journey as a programmer will continue for as long as you write code.
If you see or do something neat along the way, drop me a note at email@example.com.
Thanks for sharing part of your programmer's journey with me. Happy trails!