If you are in the Groningen region for a longer period, I can highly recommended taking Frank Brokken's C++ course [1]. I took the course over ten years ago and

If you are in the Groningen region for a longer period, I can highly recommended taking Frank Brokken's C++ course [1]. I took the course over ten years ago and benefitted from it many years thereafter. He is also a great and very entertaining lecturer. [1] he is the writer of the C++ annotations.