I was frustrated when I started reading this book by the lack of summary diagrams. It takes until page 219 to show you the first two diagrams, which would have been better placed back in chapter 1, to set the scene. Then there's nothing until page 680, when there are a handful on a particular topic. Julie seems to take the approach of why use a diagram when a thousand words will do..
The text itself is very readable, and gives you useage examples from every angle (LINQ to Entities and Entity SQL, as well as showing how to use these in Win Forms, WPF, ASP.NET, web & WCF services).
One further niggle is every example is given twice, once for VB & once for C#. As a C# developer this just makes the book 20% thicker than it needs to be!
In summary, as a newcomer to Entity Framework I've found the book provides a comprehensive introduction to the technology.