Let me give my grain of sand. As an argentinian woman who lived abroad, my main conclusion is that there are universal issues, you cant be there following a script because it wouldnt work out, however you need to have good lines to follow. A woman likes the man to be charming in every step, and I mainly agree with what was written by Bajo_Cero and French Jurist. As you know, women are intuitive, so a woman perceives that the guy is a good person, and then she feels comfortable with him. You dont need to lecture her on any issue. Also, there are few situations where you need to be sensitive about cultural diversity. Recently I met a British guy at a milonga. Firstly I told him about my interest in the history of the tango, he replied that it doesnt exist at all, he kept saying that the tango is like the salsa and you need to know that there are several styles. Imagine my response. He answered that England does have history because it has more than thousand years of life, America has more 200 years of history, but that Argentina doesnt have any history at all, because this country has only 100 years of life. He ABSOLUTELY lost me, I dont want to waist any second of my life with a guy like him, besides the fact that he is handsome and has the typical british charm.
You just need to have the good vibe inside you, and you will find a partner/partners.
Be aware of the strong anti-american feeling (or political ideology) that some argentinians have. I have argentinian friends who dont want to have to hang out with a foreigner at all.
Your main winning point is that there is an stereotipe that argentinian men, specially in Buenos Aires, are chantas and lossers in life. So, keep that in mind when "selling" yourself to THE special woman. You can flirt to get a coffee or a life with her, who knows???
Best of good luck, and let us know about your achievements!!!