If you follow the Microsoft .NET roadmap, you have probably heard about the forthcoming Language Integrated Query (LINQ) in .NET 3.0. LINQ will add query capabilities directly into the CLR and will be supported by both VB.Net and C#. This means that you will be able to use standard query operators directly from within your code!

To help you get started with LINQ, Marco Russo and Paolo Pialorsi wrote a book Introducing Microsoft LINQ published by Microsoft Press. The book is expected to be published in mid-May. Meanwhile, the authors have set up a public forum (http://introducinglinq.com/) and they are eagerly awaiting your LINQ-related questions.

Oh, yes, I've made a tiny contribution to the book by reviewing a few chapters. I found the book to be a great introduction to LINQ. I particularly liked the code examples.