From credit cards to credit scores and everything in between, “Grown-Up Stuff: How to Adult” digs into the good, bad, and prudent ways to build and use credit. We talk to Sara Rathner, a senior writer, travel, and credit card expert at NerdWallet, about why making purchases with a credit card (instead of a debit card) is safer, how we can build our credit back up from a less-than-perfect past, and how to effectively use your credit card to build up a personal rewards savings account!See omnystudio.com/listener for privacy information.