"Advanced Sharepoint Services Solutions" is the second book by Scott Hiller, on Sharepoint Technologies. The first one was about building basic web parts. This book is for developers who have good knowledge of Sharepoint technologies. It is also assumed that you have already built some web parts and also have good understanding of .NET development. If you are looking for basic Sharepoint stuff, refer to his other book "Microsoft Sharepoint Building Office 2003 Solutions".
The Advanced book is not a complete reference on Sharepoint technologies. Instead it contains 8 chapters, which covers widely different areas. There are few chapters which are not covered by other Sharepoint books. This book is good source for CAML, Information Bridge Framework, Business Scorecard Accelerator, Sharepoint and BizTalk Integration, and for Sharepoint and Content Management Server Integration.
Since these topics are usually not covered in regular Sharepoint books, it becomes good source for these topics.
The book has good amount of source code (in C#) along with the text and provides some great ideas for system integrations. But as I said before it is not a complete reference book, just some great solutions for customizing and integrating Sharepoint technologies.
