You should understand that most Nigerians at that time did not know about Bitcoin and the digital currency did not have much influence in Nigerian society. Still, if I, as a Nigerian, had been fortunate enough to know about Bitcoin at that time and had been able to hold on to it patiently, I would have definitely become a millionaire. But the point is that when Bitcoin was created or in 2010, not many people knew about Bitcoin and no one could have understood the future potential of this currency, so even if we Nigerians had Bitcoin at that time, many would have sold it for a small profit and many would have sold it before the price skyrocketed. However, it is true that some Nigerian Bitcoin OGs are probably benefiting the most because they have been holding Bitcoin ever since.
In 2010, I don't have a laptop or PC of my own, the only phone I had then was Nokia C1, I think Nokia was dominating Africa then as number one phone producer. With all the information available, I don't think to do most of the things OP was talking about will be possible because to own a wallet address will be hard that time except if you decide to use a paper wallet then, that's the only thing my phone can do but to buy, I don't think my phone could do any of those.
We were behind with technology that time, how many house hold in Nigeria can be bold to own a laptop that time, if you do then it's for studies and maybe for family function, that's the main purpose of a laptop and PC. Anything other than that, your parent might consider you to be doing anything. Imagine using family PC to mine Bitcoin, you are in big problem that day. I don't think data was even cheap that time to use PC to mine that time.
