1. Theoretically, a credit card has a limit of 1%, that is, if you spend 3, yuan on a card, you can charge 3,3 yuan at most. In addition, the extra 3 yuan will be charged for exceeding the limit, and the standards of different banks are different, so you can't buy more than 4, books.

2. If you overdraw 9 yuan now, you need to pay at least 1% before the final repayment date, that is, 9 yuan. If you pay back 1 yuan every month, you need to pay it off in 9 months, and the amount paid each month is as follows (assuming that you pay back every month on the last repayment day, and the bank interest is five ten thousandths of the daily interest):

the first month: 1

the second-ninth month: 1+9*1.5%=113.5

the total * *.

if you can't pay in one lump sum, you can choose to pay by installment, so the interest will be much less.

3. If you want to spend online, you need to activate the online banking function first, and you need to call the customer service representative to ask how to activate it.

I hope I can help you. thank you