If you are studying for the Microsoft Certification exams 71-561 or 71-562, I can suggest you to download the .NET Framework 3.5 Enhancements Training Kit
from Microsoft Downloads and work on the hands-on-labs coming with the training kit.
You will find Introduction to ADO.NET Data Services and Introduction to ADO.NET Entity Framework labs about the Microsoft certification exam Exam 70-561 TS: Microsoft .NET Framework 3.5, ADO.NET Application Development.
Also about the Exam 71-562 TS: Microsoft .NET Framework 3.5, ASP.NET Application Development exam there are the following hands-on-labs in the training kit.
Developing ASP.NET MVC Applications
Introduction to ASP.NET Dynamic Data
Introduction to ASP.NET AJAX History
Introduction to ASP.NET Silverlight Controls
The download has a total size about 35 MB. But requires Windows PowerShell 1.0, PowerPoint Viewer 2007 and ASP.NET Futures which can be downloaded and installed during the installation of the .NET Framework 3.5 Enhancements Training Kit