Course in Catalan Sign Language/Llengua de signes catalana
I apologise that I can't write this in either Spanish or Catalan, I hope you will forgive me!
Someone brought to my attention a class on LSC on FutureLearn. FutureLearn runs free online courses in many different areas.
The course page says it will be taught in LSC with transcription in English, Spanish and Catalan, so it might even be appropriate for practice for people who don't necessarily want to learn LSC, but would like a chance to practise their Catalan. I have done the Dutch course on FL before, but as far as I know this is the first sign language course they've offered, so I can't give any insight into what it will be like.
At any rate, I figured there might be some interest here :)