Course
Pluralsight
Self-paced
Video
Pluralsight: SharePoint 2010 Developer Ramp-Up - Part 3: Information Architecture Storage and Data Access
Information Architecture Storage and Data Access - learn how SharePoint 2010 stores data and how you can access that data both from server-side code (including using the new support for LINQ) and client-side code.
Open on Pluralsight
The course lives on Pluralsight — this page is a pointer with the details.