Its my first team also, but as far as I understand it, it is just connecting people in a way that each of them gets notfied when one of them submits a new solution.
You do some exercise to learn something. After that you start reading implementations of the same problem and comment on them (either because you like a piece of code, you don’t understand something, or you want to leave some positive or negative critics), if everything goes well, those comments are the start of a discussion and you do learn even more from these discussions.
I’m really enjoying exercism as a means to learn Elixir. I’m reading Programming Elixir at night and solving the exercises when I have some free time. My username is pabloborges