I'm planning to study in buenos aires for about 3-4mos from about May/June-August/Sept. I've read that a tourist visa could be all I need which is good for 90 days. If I were to stay longer I could just reapply for another 90 days. What experience does anyone have with this? Is it better or safer to just go ahead & get a student visa? What kind of time, cost, & preparation am I looking at with attempting to get a student visa? I'd appreciate any info or experience people can offer.