Spanish with an Argentinan accent, although it is not exclusive to
Argentina (it is found in a few other
Central and Southern American countries), varies in only one aspect from the first write up.
The double-L ("ll" as in ella, llama, or estrella) is not
pronounced y but rather a soft
j with sort of an
"sh" quality.
Just a bit of advice: if you are anxious not to sound like a "
gringo" pronounce your
ts like
ds and your
vs like
bs. Those, as well as those mentioned above, are the details that will help you smooth your Spanish into a decent accent.