There are numerous resources and tango communities and this is new list of a few that I find really helpful.
Tomorrow’s Milongas : We all want to dance and some of the individual sites are understandably out of date. The Facebook group “Tomorrows Milongas – London” has been very useful to me – it’s great to get a fast view of where I might be able to dance over the next day or so.
TangoFolly – a well meaning community that attracts some thoughtful writing and useful information.
I don’t want to provide a long list of the tango videos performances that anyone can find on youtube, but these ones attracted my attention a while ago and I still rate them as very interesting to anyone interested in the Tango scene in the broader sense.