Getting started with LINQ

Hi,

I am an absolute beginner with LINQ and wish to explore it using VS-2005 & SQL Server-2005. Can anyone guide me on getting started with LINQ. What software do i need to download to use LINQ with Visual Studio 2005. I do not want to use Orcas (Visual Studio 2008 beta) for the time being. I just want to explore LINQ using VS-2005 and the tutorials on ScottGu's website with the following URL:

http://weblogs.asp.net/scottgu/archive/2007/08/27/linq-to-sql-part-8-executing-custom-sql-expressions.aspx

Thanks for helping..