First, there is a recent New York Times article that a lot of you sent me with plenty of recommendations. My favorite way to find restaurants in BA, aside from asking friends, is the Guia Oleo Restaurant Guide. www.whatsupbuenosaires.com) is a bilingual guide to the city’s arts, music and cultural offerings. www.bue.gov.ar), the city’s official tourism site, has event listings, useful tips and directories. Another expat blog I found in the NYT article is www.tangospam.typepad.com.
If you want to learn Spanish, check my earlier posts for the two schools I've used.
Hopefully, you'll all hear from me soon on another adventure.