Pretty short but clear book on Erlang. The first half consists of things I’m familiar with already (immutability, pattern matching, recursion, higher order functions). It was the last half that I was more interested in, process oriented programming and OTP. I’ll have to read a more in depth book to understand it thoroughly, but it’s a very interesting approach.
Alan Kay said Erlang is closer to what he meant by object oriented than Java or C++