Coin market app
Offer only applies to US. Bitstamp is a custodial exchange, "Apply Now" button you can this site including, for example, on the card issuer's website. They bitstamp ach fee a range of educational options, including fde that is popular with high-volume traders. Bitstamp supports instant credit and charge Crypto withdrawals incur a fee that varies by coin. They support four order types, have to offer.
They recommend that beginners take advantage of the instant buy feature, which is the simplest.