Off topic, but is there a recommended post detailing various online Erlang learning resources? I'm reading an O'Reilly book and playing around in the shell but I feel like I need more 3rd party resources to really grok what I'm reading.
Pragmatic Bookshelf's Programming Erlang book (written by Joe Armstrong, the inventor of Erlang) is a good starting point. If covers the basics of the languages as well as introducing ETS, OTP, and Mnesia.
The System Documentation section of erlang docs has well written getting started guides: http://erlang.org/doc/ -- they were the only reference we had before these silly books started showing up a few years ago.
(implied: i was erlanging before it was cool. you probably hadn't heard of it back then.)
Just remember to learn Erlang in layers. Vague order of learning: base language/runtime, APIs, more runtime, more APIs, concurrency, behaviors, nodes, more APIs, multi-nodes, ports, drivers, nifs, ...