What is the best way to travel to South America?

Jobs are not easy to find (for foreigners and for Argentinians).

Some places in Buenos Aires are not safe. Just don't go alone anywhere. Don't go about with all of your money in crowded places (e.g.: the subway, the centre, etc.). If you're going to take a taxi or "remisse", make sure it belongs to a registered company (you'll see a registration number, printed on the door).

Some places in Buenos Aires are particularly expensive (especially, near Santa Fe Ave., and in Palermo, Belgrano and those parts of the city). But other places are cheaper (Once, Almagro, etc.)

Outside Buenos Aires, the same applies. Ask in your hotel what places are safe, and don't worry as long as you stay in those places.
Jobs are not easy to find (for foreigners and for Argentinians).

Some places in Buenos Aires are not safe. Just don't go alone anywhere. Don't go about with all of your money in crowded places (e.g.: the subway, the centre, etc.). If you're going to take a taxi or "remisse", make sure it belongs to a registered company (you'll see a registration number, printed on the door).

Some places in Buenos Aires are particularly expensive (especially, near Santa Fe Ave., and in Palermo, Belgrano and those parts of the city). But other places are cheaper (Once, Almagro, etc.)

Outside Buenos Aires, the same applies. Ask in your hotel what places are safe, and don't worry as long as you stay in those places.