Here is a list of books that I recommend that you should read in order to broaden your cultural horizons:

Dinka: Legendary Cattle Keepers of Sudan
http://swarife.com/lsp

The Dinka of the Sudan (Case Studies in Cultural Anthropology)
http://swarife.com/luy

Warriors of the White Nile (Peoples of the Wild)
http://swarife.com/lx3

A Land at the Centre of the World: An Ethnography of the Dinka Agaar of South Sudan
http://swarife.com/ly8

South Sudan: The Untold Story from Independence to Civil War
http://swarife.com/lzF