It's not my first exactly. I'm pretty handy with Python, and I've played around with various other languages. I chose Elixir because the functional paradigm gels better with how I think than OO languages. Elixir, with Phoenix, alongside React and React Native seem like a good fit for what I want to do: build sustainable small-scale web apps. Pinboard is a motivating factor for the sort of business I'd like to build.
I too have learned Elixir and am interested in these sort of small scale Internet businesses. If you want to chat about ideas and do a regular office hours style meeting that would be cool. My theory is that just doing the office hours each week will focus minds and help us to clarify the most important things we should be working on.
Interesting pick for a first language.