The first section gives an overview of PAIS(Process Aware Information Systems) which includes a nice classification of PAIS and the rationale behind it, adding a little bit of history along with techniques and tools too.
Then the book discusses concepts of Workflow Management and modelling, person to person interactions, business to business integration etc.
The section two of the book is more like a reference. That includes UML modelling, petri nets, and event driven process chains. But hard to read continuously though.
The last section discusses more practical methodologies and standards such as XPDL and BPEL. For those who are interested in web services business processes like my self, this is again a good reference. But before reading this section its better to have look at those specifications first and may be started with "Introduction to XYZ..." kind of an article.
