First, check your budget and credit report, then compare cards by interest rate, fees, purchase terms and eligibility criteria. Use an eligibility checker where available, as it may show your chances without a full credit application. Apply only if the card suits your needs, and read the agreement before accepting it. Once approved, set up a payment reminder or direct debit and aim to clear the balance in full each month to avoid interest. If you plan to carry a balance or transfer debt, compare the total cost carefully and check the provider’s FCA authorisation.