If you're putting together a course on BMF.io, you gotta be a bit careful with copyright stuff. Like, if you're using images, videos, music, or articles that you didn't make yourself, you can't just throw them in there unless you've got permission or they're free to use. Even small things like quotes or clips can get tricky. It might not seem like a big deal, but it can cause problems down the line if you're not careful. Best move? Stick to your own content or stuff that's clearly okay to use (like Creative Commons stuff). It keeps things chill and hassle-free, and your course will still look awesome without any legal drama.