Interesting topic. In my opinion, starting Argentine Tango should not be different from entering any social community for the first time. Before traveling abroad, we try to find out about some specific local rules and customs that, if not observed/paid attention to, could put us in trouble. When we begin a new job, we do not start by saying that some things had been done wrong (even if it seems so at times), and by teaching everyone new ways. When we start socializing with any unfamiliar party, we listen, look around, pay attention, are we not? All teachers I have taken lessons from spoke about the rules. It might not be happening everywhere, and I agree, instructors, <i> if they intend to prepare social tango dancers</i>, got to speak about such matters in classes. But, as in any classes, some people listen, some do not. There are some nice informative articles about milonga rules on the internet. There are blogs of avid milonga goers. Reading them helped me a lot when I was starting (and still does). Not to mention this forum I would think, people who take tango lessons in this country usually have Internet access and can read English. Have some of them been banned from Google? I am always more than willing to talk with new people in milongas and answer their questions. Some consider, some just go on and do their thing. I had a couple of newcomers who, upon hearing some of my answers, said things like "Dancing several songs with the same person, that is a silly rule. I am not going to do that". Or: "Some men do not like to be asked? But they won't turn me down if I insist, can they? I am a woman, they cannot say "no" to a woman!" etc. Actually, I have an impression, that some people are not interested in a social aspect of tango. For them tango is putting on a vintage dress with sparkles or a fedora hat, and be a passionate and exotic creature for a night that in real life they are not. So, in milongas, when they bump (pun intended) into those for whom tango is not Halloween, there happens a culture clutch. Personally I try to let these people be. I don't know what is to be done about it. Bottom line, what I see most of the time, people break the codigos and step on toes not because they have no information or no way to obtain it, but because <i>they don't care</i>.