When kids in https://old.reddit.com/r/opengl/ ask about a good starting project, I usually recommend making a glTF viewer. It’s good because it’s a scalable project that you can take as short or as far as you care to go. At a minimum, you can just get solid colored triangles on the screen in generally the right shape. But, if you find yourself having fun, you can end up building a full-featured scene renderer to rival https://google.github.io/filament/Filament.html
Hey, if you're going to post about something that you know about, can you please educate the rest of us about what's going on and what the issues are? I'm sure it's not your intention, but if you post a short dismissive comment like this, it comes across as a supercilious putdown, and that ends up poisoning the ecosystem.
