A provision store is a retail outlet where goods such as food items and other consumer goods are sold. It is one of the lucrative businesses you can engage in out there and make you some money. It involves the game of buying in bulk, that is at wholesale and sell at a retail price which is a bit higher compared to the wholesale price you bought the goods at.

1. Do your research and plan
2. Getting the shop and equipment (Prices depends on your location)
4. Buying your goods

Full explanation with details available here
http://businessverion.com/all-you-need-to-start-a-provision-grocery-shop-in-nigeria/

Provision store business is very lucrative that is why people who start small expand within a short time. The business is fkexible, you decide what to sale.
People keep asking, 'how much do I need to start provision business'?
You can start with any amount less than 20k, 100k, one million etc. Your capital determines what you sell.
For the steps on how to start provision business and the items...
https://www.enibest.com.ng/all-posts/business/how-to-start-provision-store-business-in-nigeria-for-profit/

https://www.youtube.com/watch?v=PhJ35CrXHiw