This book gave me a good understanding of the methodology of ASP.NET as well as the concepts behind it. The organization of the book is good for someone new to ASP.NET and C# as it starts simple and proceeds forward in a logical manner to more complex topics.
However, I agree with a previous reviewer that an updated version or an errata page on the publisher's web site are sorely needed. This too kept me from giving it 5 stars.
This book was started with a pre-release of Visual Studio.NET 2002 so the example code won't match the code you generate yourself; most people should be able to figure out which parts of the sample code are relevent. A few of the samples won't work as-is but that shouldn't stop experienced programmers from figuring out how to get it to work.