We have started creating a “How do I” video series for data services. A couple videos are already posted here: https://msdn.microsoft.com/en-us/data/cc300162.aspx. We have a number of ideas for future videos and a few more yet to publish, but if you have ideas for videos you would like to see please do let us know.
Marcelo has a nice post detailing how to deal with a couple common cases that can cause 400 responses from a data service. Check it out here: http://blogs.msdn.com/marcelolr/archive/2008/04/01/fixing-400-bad-request-replies-from-asp-net-when-using-ado-net-data-services.aspx
ADO.NET Data Services, Program Manager
A few folks have asked about using the Silverlight Beta 2 client library against a data service created using the recently released .NET Framework 3.5 SP1 RTM bits. In general, the Silverlight Beta 2 data services library was created to target the .NET Framework 3.5 SP1 Beta release of ADO.NET Data Services server side components.
ADO.NET Data Services (aka “Project Astoria”) has Released! Today marks the official RTM of Visual Studio 2008 SP1 and the .NET Framework 3.5 SP1, and we are thrilled to announce the official RTM of the ADO.NET Entity Framework and ADO.NET Data Services.