What strategy should i use to promote my indie game development course?

I’m a 3D artist, now i try to make my first indie game development course, there is a reason to think that it might be interesting, but my weak side has always been self-presentation on the Internet, plus I’m not very familiar with reddit and I don’t know where I can post this and how not to go too far with self-promo, because i heard like some subs get banned for it.. In general, what advice can you give me on promoting a paid course, in what subs can i safely write about it, and on what platforms is it better to publish the course itself? I thought about itch, but I haven’t seen many courses from it myself