Visual C vs Visual C which is the best to learn

Question

I completed my C++ lessons and practises before beginning to learn Visual C++ with the book Ivor Horton's Visual C++.

The issue is that I am unable to grasp the language of this book and am having difficulty understanding the codes.

I want to study Visual C++ for Windows programme development and make a career out of it (I already know C++).

Some of my acquaintances advised me to convert to C# since it offers numerous library functions for creating GUIs, etc., and that it is difficult to develop Windows apps in Visual C++.

Now that the holidays have here, I intend to enrol in lessons; could you advise me on which language to study and which will be the easiest?

I've always wanted to study Visual C++, but it seems difficult when I don't comprehend concepts in reference books, for example.

Any assistance will be greatly appreciated, and I thank you in advance for your time.