If you are done with the Spanish tree, consider a Coursera course taught in Spanish
Specifically, I wanted to recommend the course about the chemistry of home supplies such as shampoo: ¡¿Cómo?! ¿Química en mi casa?. It's just started this Monday, I've seen the first videos (with Spanish subtitles) and I think it's quite doable. It's popular science, not a full-on chemistry class. I'm already noting the many usages of subjunctive, and I hope that listening to the professor will make me more acquainted with that mode.
Are you doing other Coursera courses in your target language? Please post a name/link! I know that many people brush up on their English specifically to complete a Coursera course, but courses in other languages are quite scarce, so it would be interesting to hear about some of them.