The Complete Visual C# Programmer's Guide
The Complete Visual C# Programmer's Guide, written by the authors of C# Corner, covers most of the major components that make up C# and the .NETenvironment including Windows Forms, ADO.NET, GDI+, Web Services, and Security. The book is geared toward the beginner to intermediate programmers.

LINQ for Visual C# 2005
LINQ for Visual C# 2005 is a short yet comprehensive guide to the major features of LINQ. It thoroughly covers LINQ to Objects, LINQ to SQL, LINQ to DataSet, and LINQ to XML.

Pro LINQ: Language Integrated Query in C# 2008
This book demonstrates the overwhelming majority of LINQ operators and protoypes, it is a veritable treasury of LINQ examples.