We all know not all will be like Dangote even thou some girls or guys here think that they will own factories or companies some may not but the truth of reality is finding your niche and staying strong,if all are lawyers or doctors who will dry clean,cook,drive,security etc. so the truth is I will only advise just look for a problem that Nigerians have and solve it and you would be not only famous but a millionaire because thousands now doesn't guarantee anything. Some people should try this businesses and let's see.
1. Farming in every form
2. Food stores
3. Speech orientation u know those talkatives
4. Entrepreneurship look for if you don't have idea
5. Serve or learn a trade
6. Cassava processing
7. Fish farming
8. Fruit planting and supply to factories
9. Welding or piping
Finally in osofia voice go and make money others are making money and remember the decision you take today will be what your family will feed on tomorrow. Me too am looking for someone into tech to partner with on resources and franchise to as there are various methods of business.