Is there a 3rd C++ lesson?

Question

Ok so i finished "The Introduction to C++" course...
Now i moved to the second C++ course which is "C++ Intermediate"
However, I noticed that there is no "C++ Expert" or whatever the 3rd C++ course is called.
The three squares at the course logo or whatever it's called is clearly pointing out the number of the course.
What i mean is : At the 1st course ("The introduction to C++") there is 1 filled square and 2 blank squares under the "C"... and the 2nd one ("C++ Intermediate") has 2 filled squares and 1 blank square...
So where is the one with 3 filled squares?

Is there even a 3rd C++ lesson? If yes then where is it? And can i accesses it?

Answer 1

There is a "complete" C++ course but it seems to essentially cover the same things as the Intro and Intermediate courses. It does however have a More on the Subject section with different discussions about things like vectors, stacks, bubble sort, macros etc.
https://www.sololearn.com/Course/CPlusPlus/?ref=app

Answer 2

You can’t beat a good book if your serious about learning C++.

There’s loads of good books and different recommendations, some very advanced, however I believe “Thinking in C++ Vol 1” by Bruce Eckel is a easy read and a good follow on from the courses

Answer 3

I don't see it either.

Maybe it is in development stage or there will not be an advanced course.

But, you can learn more using different sources of information and/or visiting C++ documentation