Bitcoin can be used to buy a variety of products available on Amazon ??
Can I buy Bitcoin through Robinhood?
For amazon, I guess one of those crypto credit cards could work ... the ones where you pay in crypto, but they automatically convert to fiat for you. Not sure what the point would be though.
And yeah, you can buy btc through robinhood, if you live in a state where they are set up for that. Not sure about btc, but for other cryptos be aware they don't use proper user-controlled wallets. Meaning you can't withdraw your crypto from them ... not sure if they changed that recently or not. I did a test a while ago with a small amount of doge, just to see how it all worked. Easy to buy doge, but impossible to then get it off of robinhood (can always sell to fiat, but I mean you can't get doge into your own wallet).