If you like the O'Reilly format then I liked Designing for Scalability with Erlang/OTP. I thought it was light on the details beyond scaling beyond single node

If you like the O'Reilly format then I liked Designing for Scalability with Erlang/OTP. I thought it was light on the details beyond scaling beyond single node OTP apps but it covers a lot of the built-in Erlang functionality pretty well http://shop.oreilly.com/product/0636920024149.do http://shop.oreilly.com/product/0636920024149.do