When I was in my teens and 20s, I visited Brazil several times for long periods to visit my father and brother. At one point I was able to pick up the language well enough so I could carry on long conversations without having to first translate in my head. But I haven't had the time or the money to go back there since the late 1980s. In fact, my passport expired in the early 1990s. I'd like to go back and see how things have changed, visit my brother and my nieces, see some new parts of the country, and reacquaint myself with the language and culture.
A few years ago it became necessary to have a passport to visit almost anywhere, including Canada and Mexico. So the very first step would be ponying up the $180 or so that a passport costs these days.