how to do c++

Take a tutorial, book, start from page 1.
If you would take a course, start from day one.

Great C++ web site with tutorials, reference documentation, etc. www.cplusplus.com

FWIW, I have been programming C++ professionally for 25 years. When I am writing code I keep cplusplus.com open in my browser. Over the years, the language has evolved and how you deal with stuff depends upon the version (C++11, C++14, etc). This helps keep one from using the wrong version for projects, especially those that are built on older versions and require older compilers.

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