Paying medical bills, renovations, or car repairs with a new credit card to unlock a huge sign-up bonus can take the sting out of unavoidable expenses.
You can only earn one bonus per person from the regular American Express Platinum Card. However, there are multiple versions of the Amex Platinum card.
Student credit cards are usually easier to get approved for with limited credit. Once you graduate, it's possible to convert your card to the regular version.