Informatics

Prof. Guzhov's materials
http://optic.cs.nstu.ru/?page_id=985

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Trailer Course: Get Started with Programming in C
https://www.udemy.com/course/get-started-with-programming-in-c/

Fundamentals of Programming in C
https://www.udemy.com/course/fundamentals-of-programming-in-c/
Some programming experience is helpful, but not required

C - Fast Crash Course - Introduction
https://www.udemy.com/course/c-fast-crash-course-introduction/
You need to know the fundamentals of programming to understand this course

C++ For Programmers
https://www.udacity.com/course/c-for-programmers--ud210
C++ for Programmers is designed for students who are familiar with a programming language and wish to learn C++.