Facebook was able to hack growth into millions because:

1. They found fit early with a niche (universities) and had enough data.

2. They started looking at the data very early for insights.

3. They iterated and experimented with brutal efficiency based on their data.

As an African startup, you have the advantage of finding fit with a niche if you know the right niche to address and know when to grow out of it.

Almost ALL startups I know that failed either didn't find that niche or found it and became too comfortable inside it. Be paranoid.

These things are written in books already. A founder who doesn't read is worse than an uneducated casual laborer.

This book below was my Bible when we started. We were successful when we were paranoid, we failed when we forgot paranoia. Be paranoid.

https://www.amazon.com/dp/B0036S4B2G/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1