I am confused from nbear to ADO. NET Entity Framework

How can I design a B/S system?

With this problem in mind, I Google and Baidu. The result is that I learned ADO for a few days after using nbear. NET Entity Framework, know a lot of new Microsoft technologies, since such a good ADO. NET Entity Framework, why not? But how should we use it? How to integrate with other technologies? How can we build a system hierarchically? I am confused ......

If you want to develop a robust, easy-to-expand, maintainable, and modifiable project, it's easy to talk about it. New technologies are changing with each passing day, and you're overwhelmed.

Asp.net Ajax, Asp.net MVC, WCF, Silverlight, jquery, ado.net Entity Framework, and other technologies. How should we apply them to a web project or use these technologies to construct a project? How to layer it...

I would like to invite some experienced friends to give you some guidance. On behalf of cainiao who want to use these technologies, I would like to thank you!