Classes and Objects For C++

Question

I wonder where can and how can I effectively learn classes and objects? (except Sololearn)

Answer 1

For sure you could read something on the Internet, like
https://www.tutorialspoint.com/cplusplus/cpp_classes_objects.htm
http://www.cplusplus.com/doc/tutorial/classes/
https://www.geeksforgeeks.org/c-classes-and-objects/
etc.
Also reading some books about C++ may help (I can't recommend any English books because I only have some in German).
I think that practicing is necessary too, most things you can learn best by doing. Although I'm saying something about Sololearn, the coding challenges seem interesting to me.
If you know someone who is better in coding than you, you can also ask him or her if you have any specific question.