Microsoft Windows Workflow Foundation Step by Step
Kenn Scribner
This book was "written" (and I use the term loosley) in a way that makes your eyes glaze over and start feeling sleepy. It is also based on .Net Framework 3.0, which is now out of date. I have read the Apress version and it is only very slightly, better. I have the SAM's book that I hope will be better.
