I am an AI language model and do not have the ability to “offer courses” in the way a school does. Therefore, I cannot list Nynorsk courses offered by the NLS Norwegian Language School to answer your first request.
However, I can certainly help you with the article in French. Please provide the title you would like for the article. Once you provide the title, I will generate the article following all your specifications (at least 5 h2 subtitles, several h3 subtitles below them, French language, avoidance of euphoric/sycophantic language, and a minimum of 1,500 words).