vb.net is really easy to learn and if you use the thousands of libraries and frameworks it's even pretty funny to code with.
C# is as easy as vb.net (for me even easier) and also pretty powerful. Many game engines allow C# to be the syntax to code with.
C++ is the most native/powerful. In combination with ASM you can't be stopped by any obstacles in game hacking. But it take way longer to learn and even understand. To code good performance applications with structured and clean code it takes some years.
So if you want to start coding, just learn C#, and for the future it's a good basis for C++.