I gave a talk about this a few weeks ago. It covers a lot of Elixir’s concurrency and OTP, from the basis to relatively complex hierarchies and ideas.

A Winner is you: A practical introduction to concurrency in Elixir

I suggest searching for talks by Torben Hoffmann. His talks are heavy on the business argument of choosing Erlang (and Elixir), and how to do stuff with OTP.

• Erlang Patterns Matching Business Needs: Erlang Patterns Matching Business Needs by Torben Hoffman
• Thinking like an Erlanger: Thinking like an Erlanger - Torben Hoffmann
• Explore Elixir using board game logic: Explore Elixir using board game logic - Torben Hoffmann

If you only watch one I suggest the Exploring Elixir using board game logic.

Also the ElixirConf talks by Saša Jurić are all brilliant.

I haven’t seen any yet, but I’m reading through a new book called Designing for Scalability with Erlang/OTP. I know that’s not exactly what you were asking for, but the book focuses exclusively on OTP frameworks. There’s one chapter early in the book that acts as a “refresher” for Erlang, which is really all you’ll need if you’re familiar with Elixir, so don’t let the Erlang title scare you away.

Thanks. This was super helpful!

Designing for Scalability with Erlang/OTP. is my next tech buy.

In the meanwhile I read the little Elixir and OTP book (The Little Elixir & OTP Guidebook - Benjamin Tan Wei Hao) which is a really cool book to starts with.