I took a one-semester night class in Spanish but then, in 1979, I did a five-month trip through Chile and Argentina. Chile, in particular, was a pariah country at that time (even though times were harder in Argentina), and few foreigners ventured there, so I found myself in a total immersion experience. It was mentally exhausting, but also highly productive in terms of learning to speak the language, even though I still lapse into chilenismos at times.