Via Joitske I found the The African Mentoring Project , run by Ore Somolu from Nigeria.

From their project coordination wiki they say

The African Mentoring Project was created as a way of encouraging and supporting Africans who want to start blogging. Initially there will be a pilot project limited to Nigerian women. The idea for the project came from Nigerian blogger Ore Somolu who is presently working with a group of young women from Armenia, Azerbaijan and Georgia on the Young Caucacus Women Project.

If you are interested in setting up a blogging mentoring project, wander around their wiki for lots of ideas!