I found this book interesting because It was the first one about ADO.Net EF, but if you are new to LINQ and want to learn all about the language enhancements shipped with .net framework 3.5 (on top of which LINQ is based) and the other flavors available (LINQ to XXX) I suggest you look for another one. This book in my opinion is best suited for people who are experienced enough with Domain Driven Design and ORM's and faced with the difficulties to accommodate the Object and the Relational "worlds." It explains how to use LINQ to SQL and Entity Framework to map in bottom-up and top-down approaches, the book is provided with good code samples and the solution used in the use case is available for download.