Based on the book article Kirsten and me wrote 2 years ago a new book is out. Nice to see my name on a book cover again :)
The book has 220 pages and just 13 chapters and is a bit expensive at the moment. I suggest to wait until the price drops, the ebook is at least a bit cheaper.
Some similar source code can be found in the DeltaEngine/Samples directory or on the book download page. More sample game are available on the StarterKits page as well.