Entity Framework

The Entity Framework vs. The Data Access Layer (Part 0: Introduction)
http://blogs.objectsharp.com/cs/blogs/barry/archive/2008/04/27/the-entity-framework-vs-the-data-access-layer-part-0-introduction.aspx

The Entity Framework vs. The Data Access Layer (Part 1: The EF as a DAL)
http://blogs.objectsharp.com/cs/blogs/barry/archive/2008/05/06/the-entity-framework-vs-the-data-access-layer-part-1-the-ef-as-a-dal.aspx

ADO.NET Entity Framework .Net 4.0
http://msdn.microsoft.com/en-us/library/bb399572.aspx

Get Started with the Entity Framework
http://www.asp.net/aspnet-35/videos/how-do-i-get-started-with-the-entity-framework

Use the New Entity Data Source
http://www.asp.net/aspnet-35/videos/how-do-i-use-the-new-entity-data-source