Hi there. Maybe you already read K. Scott Allen's Workflow Readling List , well, this is my version.
I've been reading, coding, watching, etc. all kind of stuff related to Windows Workflow Foundation (WF). It´s my favourite WinFX technology, so, if you are new to WF, this could be useful.
Windows Workflow Essentials:
Windows Workflow Articles:
Windows Workflow Foundation interesting info (blog posts, forum threads, etc...):
Well, I'm tired. Maybe there are more valuable resources out there. I will try to keep the listing...
And of course, don´t forget www.windowsworkflow.net and www.windowsworkflow.net/forums .
Hope this helps in your Workflow Foundation project ;-)