This book is an excellent tutorial for VBers who are moving to DotNet and who want to break all the bad habits picked up over the years. I have, by the way, just described myself. The book does a very good job bringing object theory down to earth and showing how to implement objects in both VB.Net and C#.
If you are new to objects, this book will show you why object programmers swear by the approach--it really does make it easier to write scalable, reusable code. It also helps the developer avoid the "house of cards" syndrome as a program grows beyond its original scope.
If you have had plenty of object theory, but struggle to translate objects to code, this book will get you over the hump. Examples show how to implement inheritance, acggregation, and association.
I would recommend starting with this book, then reading Rosenberg, "Use Case Driven Object Modeling With UML", which teaches an object-oriented development process. Fowler, "UML Distilled" is another great text. Finally, dig into Gamma et al (the "Gang of Four"), "Design Patterns". These books really will change the way you code.
Postscript: Having worked through the examples in the first half of the book, I continue to be impressed. Reynolds-Haertle does a very nice job of illustrating most of the constructs one uses to get day-to-day jobs done. For example, she includes several examples of collections built with the .Net ArrayList construct. Later, she shows an example of a collection built with a Dictionary construct, and discusses benefits and drawbacks of each type. If you are a VBer who (like me) is somewhat bewildered by the collection classes in .Net, this book does a very nice job sorting them out.