If you ever want to get started with Erlang I highly recommend this site. I found out after most of my basic language training was already done, but still learned a few good tricks.
While QuakeLive was mostly Python, Database and Web work, this last year was almost exclusively C/C++. Spending a few days exploring different paradigms has been incredibly refreshing. Functional programming has come a long way since my College days, it's really quite enjoyable now.
I would like to produce a personal assessment of Erlang eventually, but I don't feel I'm quite there yet. Instead I've set my sights on Haskell, for which there is this site (conveniently enough). Far as Erlang I wrote a few crappy and less crappy things, and pushed a simple solution to the Dining Philosophers problem. I thought that one could be useful to compare against the other sample implementations.