Knowing C++ is the primary prerequisite to programming in Visual C++. To understand what is going in MSVC classes and controls, you should/must the concepts of variables, classes, arrays, inheritance, pointers, etc.

This site serves as a prerequisite to Microsoft Visual C++. It allows you to know the programming environment, how to use it, what it provides, etc. If you are new to Visual C++, this should be your starting point.