Read :

- The Akan doctrine of God by Danquah
- Anything about Yoruba really, example :

asq.africa.ufl.edu/files/ASQ-Vol-2-Issue-1-Bewaji.pdf
https://www.degruyter.com/view/j/humaff.2011.21.issue-4/s13374-011-0043-3/s13374-011-0043-3.xml

- Encyclopedia of African Religions

- Death and the invisible powers

- A real anthropological book about Vodun, not those "magic" bullshits, like :

Possesion, Ecstasy and laws in Ewe voodoo