I like LINQ and I posted about it in my blog.
In the last 2 weeks I have been reading the book Pro LINQ: Language Integrated Query in C# 2008 by Joseph C. Rattz, Jr. | ISBN: 1-59059-789-3 which I have had access to via the Early Access Program as a PDF ebook.
This book provides superb coverage of LINQ where it shows the reader how to leverage all the new LINQ C# 2008 language features including extension methods, lambda expressions, anonymous data types, and partial methods.
The book refers to all kinds of LINQ including LINQ to Objects, LINQ to SQL, LINQ to XML, LINQ to DataSet. The book starts with an introduction of what LINQ is (the first and second chapters, "Hello LINQ" & "C# 3.0 Language Enhancements for LINQ") and builds this more and more throughout the book and the next chapters. Even if you don't a proficient C# developer, you'll find the book useful. It provides a very good high level overview of all the sections, however goes deep into the inner works of LINQ.
The question whether to use LINQ or not is answered: the book gives you an in-depth understanding about LINQ when and where it is required.
I like the writing style to Joseph: at eye level and very coherent.
If LINQ interesting you and you would like to know it well - I highly recommend you get this book. Once I get the final version of the book, I will give it another read.
You can download the first chapter for free:
http://www.apress.com/book/view/1590597893
Table of Contents
PART 1 Pro LINQ: Language Integrated Query in C# 2008
CHAPTER 1 Hello LINQ
CHAPTER 2 C# 3.0 Language Enhancements for LINQ
PART 2 LINQ to Objects
CHAPTER 3 LINQ to Objects Introduction
CHAPTER 4 Deferred Operators
CHAPTER 5 Nondeferred Operators
PART 3 LINQ to XML
CHAPTER 6 LINQ to XML Introduction
CHAPTER 7 The LINQ to XML API
CHAPTER 8 LINQ to XML Operators
CHAPTER 9 Additional XML Capabilities
PART 4 LINQ to DataSet
CHAPTER 10 LINQ to DataSet Operators
CHAPTER 11 Additional DataSet Capabilities
PART 5 LINQ to SQL
CHAPTER 12 LINQ to SQL Introduction
CHAPTER 13 LINQ to SQL Tips and Tools
CHAPTER 14 LINQ to SQL Database Operations
CHAPTER 15 LINQ to SQL Entity Classes
CHAPTER 16 The DataContext
CHAPTER 17 Concurrency Conflicts
CHAPTER 18 Additional SQL Capabilities
