What credit is
Your credit reports are records of how you have repaid debt in the past. Credit scores are three-digit numbers that estimate how likely you are to repay a lender or card issuer as agreed in the future. A "credit check" may look at either or both.
Why it matters
Good credit gives you a better shot at borrowing money at a favorable interest rate. It can also mean lower car insurance bills and lower or no utility deposits.
How to begin
Start using credit, which is easier said than done. See if you can get a credit card, perhaps a secured credit card to start. Becoming an authorized user on someone else's card may help. Student loans, car loans and credit-builder loans also build credit history.