If you are interested in trying out LINQ capabilities, you might want to take a look at the following documents:

• LINQ to SQL: Language Integrated Query over SQL Server (C# or VB.NET)
• LINQ Project: Unified Language Features for Object and Relational Queries (C# or VB.NET)

You can download the C# LINQ samples from here.
Also, online you can browser the "101 LINQ Samples" in VB.NET.