http://www.dragongoserver.net/ The Dragon Go Server is one of many online Go communities. This one has useful forums and FAQs, a strong international membership, and a chat function; some seasoned players are willing to talk through their reasoning as they play, in order to give new players a leg up. I play there under the moniker mcwee.

http://www.aagenielsen.dk/ This Danish page, maintained by Aage Nielsen, is available in English and hosts links and commentary on the history and play dynamics of the Tafl family of games, as well as Java versions of several Tafl variants.