Hi @kostonstyle, if you’re looking to learn OTP I highly suggest this one: Little Elixir and OTP Guidebook. It’s really good for OTP although it hasn’t reached the final version.

I’m not syaing Elixir in Action is bad (I haven’t read it). Just giving my opinion on something that I’ve read

Get both

There is a coupon code for Ben’s book here and if you subscribe to Manning’s mailing list they also offer discounts from time to time. I buy around 80% of my books when voucher’s surface, even if I know it will be months before I can read them

We are very lucky in Elixir that we have so many great books - other languages of a similar age don’t have any published books yet! A well-written, professionally edited and published book (especially from a tech publisher) is worth 50 mediocre books imo (something you often get when people decide to self-publish, not always but often).

I’m currently reading Elixir in action and it’s a great book. Bare in mind that it was written for older elixir (IIRC elixir 1.0). There are several changes and in the book’s source repository there’s a branch for working with elixir 1.2. Make sure you check the code example in the source because they are slightly different from the ones in the book (especially around data types).