How to start learning a programming language? For example, C ++.

With the withdrawal. For C ++, this is the std :: cout stream and its use. Write a hello-world app. Next are the variables and user input (std :: cin in C ++). Further - according to the list:

• simple arithmetic / math functions available in the language.
• conditional execution / branching statements (if / if)
• looping statements (for / for each, while / bye)
• ...