Don´t forget to bring some patience and your best Spanish skills
Ross, I would bring an Argentina lonely planet (also available online but I prefer hard copy).
As others have said, maybe small amounts of food you cant live without, bring a few hundred pesos to get you from the airport and to get you started (obvious I guess!) and if there is any particular items of clothing or electronics you need before hand I would buy them before you come, they will be cheaper and better quality.
Ross, I would bring an Argentina lonely planet (also available online but I prefer hard copy).
As others have said, maybe small amounts of food you cant live without, bring a few hundred pesos to get you from the airport and to get you started (obvious I guess!) and if there is any particular items of clothing or electronics you need before hand I would buy them before you come, they will be cheaper and better quality.