You can find the apps and examples shown in this book at The Pragmatic Bookshelf website for this book. You’ll also find the community forum and the errata-submission form, where you can report problems with the text or make suggestions for future versions.
You can find the prepared workspace under my account (benrady) at Github.com. If you don’t have one already, create an account and fork the repository to get started. For more detailed instructions on how to do this, see Using Your Workspace.