Whatever "being black" is supposed to mean, you can't "learn a culture". You can study it, read about it, watch movies about it, listen to it etc...but a culture is lived day in and day out. Kind of like (for comparison sakes) you can learn a foreign language from afar but can't "learn the culture" unless you live in that country, among the people living an everyday regular life for a significant lapse of time. And obviously whatever image from said culture you're getting from whatever media (books, entertainment, etc) is only a fragment of it, and often a distorted one by various intermediaries according to their own interests.