To anyone who are interested in constructed languages, but have always been intimidated learning one, try to learn "toki pona". It's a simple one, perhaps the simplest one, based only on 123 words. I learned it in a few days, there's a memrise course for it, and the difficulty comes mostly from figuring out how to express yourself with the limited vocabulary. It's like a puzzle every time you try to say something. It's a lot of fun!