To be flying in Argentina (and train for a Private Pilot Licence) I would recommend you to go to the San Fernando airfield, and enroll for classes of theory and flight lessons. No need to select expensive airplanes, the least expensive will do, such as the Cessna 150-152 type. For flying in Argentina, I would recommend you to know Castellano. Argentina ATC is not English proficient, except where international airlines and traffic is operating, such as Ezeiza. The Argentina Private Pilot Licence is valid internationally (ICAO) - What you could also do, is training for same in Miami (USA) area numerous flight schools, which is inexpensive and can be completed in less than a month's time. That requires English proficiency. The USA licence (FAA) is also valid internationally.
I am a retired airline 747 captain, and I used to fly small private airplanes occasionally for fun, with friends. I went a few times to San Fernando airfield, but not recently. I will gladly answer any questions you might have.
Best regards -