There's no such thing as ".Net c++".
Maybe you mean C++/CLI, which is Microsoft's language specification intended to supersede Managed Extensions for C++ (See Wikipedia). Managed extensions to C++ are its inferior and now defunct ancestor [thanks @dp for your comment].
Bear in mind when you choose your learning material that C++/CLI is not equal to the (standard) C++ programming language; so if you want to learn the former, you should edit the question title and tags.
(Note: This is not to be nitpicky, but to help. I think getting the right idea for each name, and the right name for each concept, is an important factor for consistent learning. And of course it's especially important if you search for information on the web.)