Once you turn 18, you can open a credit card, start building credit (if you haven't already) and earn rewards.

Getting your first credit card is a big deal, but not every card is available to teens. If you’re under 18, you’ll need to be added as an authorized user to start building your credit until you ...

Keeping 18 credit cards open with low utilization and strong payment history can maintain an excellent credit score. Closing accounts reduces available credit and shortens average account age — the ...

Is 18 credits cards too many? What about 30? A California listener named Perry called into The Clark Howard Podcast recently to ask about credit card churning. "I have maybe 18 credit cards, most ...