[bitm0de]

C++ is a great language to learn since it is one of the basic programming language and is faster than many. There are two great sources for learning C++ which anyone learning this language should refer.
http://www.learncpp.com/
http://www.codesdope.com/

Definitely no.

The fact that they teach you to omit the return type is highly outdated information.

Code:

#include <stdio.h> main() { printf("Hello World\n"); }

People who do not know C or C++ should never be recommending sources for learning material.