Priya is 18 and in her first year of college, with a part-time job. Every month, money comes in and money goes out. How she pays for each thing is a real decision: some methods are instant, some are automatic, some are borrowing, and some are risky. You'll set up her month, then press play and watch how each choice turns out.
The method is not just a detail. A standing order keeps you in control of the rent; a direct debit copes with a bill that changes; a debit card spends money you have while a credit card borrows it. Pick the wrong one and the same money leaves you overdrawn, in arrears, or out of pocket to a stranger.