Now this is great piece of advice here.
You are right about it being hard to explain Steemit to Africans hen they even do not know or have wrong perceptions of Steemit.

To understand how steemit works, one needs to understand how cryptocurrencies work. When this is understood then it will be easier for them to understand that steem and SBD are altcoins that could be earned from steemit.com

We also have many people in Africa with biased minds about anything Online!

This is due to bad former experience to Ponzis and Pyramids.
I am in Uganda,but many people have lost so much money in Ponzis
.
We shall always explain Steemit to them until they see value in it.