Beginning WF: Windows Workflow in .NET 4.0 (Repost)

Windows Workflow Foundation is a ground-breaking addition to the core of the .NET Framework that allows you to orchestrate human and system interactions as a series of workflows that can be easily mapped, analyzed, adjusted, and implemented.
As business problems become more complex, the need for a workflow-based solution has never been more evident. WF provides a simple and consistent way to model and implement complex problems. As a developer, you focus on developing the business logic for individual workflow tasks. The runtime handles the execution of those tasks after they have been composed into a workflow.
Beginning WF demonstrates, in an eminently readable and accessible style, how Microsoft's Workflow Foundation (WF) technology can be used in a wide variety of applications.
Loaded with lots of simple yet demonstrative sample projects
Very hands-on with practical "how-to" information
Indexed by feature so specific questions are easily answered

What you'll learn
Beginning WF will take you step by step through many of the useful applications of workflow technology. Along the way, you will:
Create designer-based and code-based workflows
Communicate between applications using workflow activities
Implement SQL persistence with custom participants
Create workflow extensions and custom activities
Build applications that support long-running workflows
Host workflows in WCF services

Who is this book for?
This book is perfectly suited to anyone using or considering Microsoft's Windows Workflow Foundation. It describes what WF can do for you and how to quickly learn the basic concepts needed to be proficient. If you're actively implementing a workflow project, this book has lots of sample projects that demonstrate the most useful design patterns.

About the Author
Mark Collins has developed software for over 25 years, mostly using the Microsoft stack. He has served many roles including development manager, architect, team lead, database administrator, and project manager. He has extensive experience in retail (point-of-sale and inventory) and customer relationship management (CRM) solutions. Mark currently serves as a senior software engineer for a nonprofit organization, providing a custom CRM, mail processing, and fulfillment system.