Argentina is a very beautiful country with a beautiful language. When I went to live in Argentina for a couple of years I realized that I really needed to learn the slang or "lunfardo"

I found this website to be very usefull in explaining the lunfardo and it has some great blog posts about lunfardo.

http://cheviste.com

I found some useful words

Che
Boludo/a
Bondi
Pibe/a
Chabon/a
Tipo/a