As someone relatively new to LINQ, WCF, and MVC, it was great.
As someone who is familiar with databinding, but never really used it (because it's been mostly awful), it was nice to get into it.
For more specific details about how to create data-bound controls, see Bind Windows Forms controls to data in Visual Studio and Bind WPF controls to data in Visual Studio.
In the context of data binding, a data source represents the data in memory that can be bound to your user interface. Some data sources enable you to create data-bound controls by dragging items from the Data Sources window, while other data sources do not.
e Skill offers a large selection of subjects from many subject areas that can be combined into customized tests that fit your business needs.