A relevant keyword is personal finance.
I was going to suggest martin lewis but it doesn't seem like he does foundational theory and his advice is pretty tailored to the UK.
Brush up on the theory of loans i guess. Learn what a principal and interest is. Know the difference between compound and simple interest.
Direct Debits are a thing in the UK, maybe you'll encounter them too. Set up a direct debit with your credit card and you don't have to manually pay it off every month.
If your card gets stolen you can call the bank to revoke it and they'll issue a new one (and maybe charge you a fee).
>>1542200The most important thing about credit cards is that they help you build up trust with your banks, preparing you for bigger loans like mortgages or car loans.
Credit cards can also give an element of security because they are more separated from your current account than debit cards. Plus you can do a chargeback on a credit card if you got defrauded.
Ultimately fairly marginal benefits. Always pay it back in full at the end of the month. A debit card works mostly as well.
(There are 0% APR credit cards which can be cheaper than a personal loan due to less interest but you need to be a LOT more deliberate when using them (e.g. making your own repayment plans and cash flow forecasts). Otherwise you might end up running out of the 0% apr period and enter the scary daily 10% apr zone still with some principal to pay.)
