The rules of social conduct will never be written. The reason is that they are filth, and nobody wants the filth of society written in front of them. Who wants to see advertised that, for example:
-- In order to get ahead in life, you have to lie through your teeth. We call this "being diplomatic", "white lying", "being considerate of others' feelings", "saving people's hurt", and other euphemisms. All in all, it's just about saying what others want to hear and then surreptitiously doing whatever serves your interests no matter what you said.
-- What you look like is more important than who you really are. Cultivate the illusion you sell of yourself, not your soul.
-- To not feel alone, you have to belong, so cooperate with the consumer society we've created and make us rich: buy the latest cell phone with toilet and bath, get a mortgage for life, have children and spend lots on stuff for them so they can belong too. Cooperate with the interests of the powers that be, and the powers that be will give you an illusion of belonging and well-being. Moma will help you build the wall.
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So-called white lies are like fake jewelry. Adorn yourself with them if you must, but expect to look cheap to a connoisseur.