Looking into Tribes

I was really excited when I got the project brief because this is a topic that I've never looked into in great depth. I know a little about tribes, but i want to find out more about their morals and get to know their lives in more depth. I am going to start by looking at lots of different Tribes and then narrow it down to the Tribe I want to base my looks on. I have started by just looking at Clips of different Tribes, here is one that I looked at just to get an idea of their living conditions, how they dress and also any rituals they may have. Here you can see theirs a dance they do which all the women repeat twice and then stand back in line. http://www.youtube.com/watch?v=g4inVY549i0