Do not borrow and invest in amazon, you will run into issues they will hold your money and you'll be in a high stress position very quickly. I've been self employed for over a decade now after over a decade in the consulting world, I can tell you, you can run a good business out of business, by running out of capital, I've done it before about 6 years ago I ran a 5Million dollar a year trucking company out of business because of similar issues. Granted there were other issues for sure but they were solvable.

Start out small even if its just 500$ in inventory, get the hang of the process. Amazon scales incredibly well but it also works on the small scale. learn how it all works, make the mistakes with small dollars on the table. Take a look at your personal budget and clean up things where you can. I'm a huge proponent of not having monthly payments on anything unless you have to. That's me talking now with nearly 4000 a month in car payments but early on that's the ticket to building capital. Eat out cheap or eat at home, avoid payments on things and work extra hours where you can. We live in a capitalistic society and income mobility is down significantly, but its not gone. I started out in a broken family with parents on gov assistance, now I have a net worth exceeding 5m . So its still very much possible. But leveraging amazon inventory when you don't know what your doing, bad idea. You'll get a section 3, youll send in the wrong docs and theyll scrap your inventory, then youll be on here upset about it. Walk before you run.