Credt Cards are NOT a good way to borrow money.
The way they work is that you buy something in say January and the amount is put on the credit card (you dont pay for it straight away).
Then about 4 weeks later in February the bill comes, and it will only be for £100 (no interest).
If you pay it ALL off straight away (before the next bill) then there is still no interest.
But if you only pay the minimum (say £5) then when the NEXT bill comes, next month, March, it will be £95 plus some interest (plus anything else you have bought of course).
Then if you still dont pay it off then next month, April, it is £95 plus MORE interest (and even interest on last months interest).
So each time you dont pay off the full amount you get interest added EACH MONTH. Plus you get interest on the interest on the interest etc.
I think credit cards ONLY work if you pay the full amount off each month (as I do).
If you dont pay off the full amount, AND buy more things, then the amount you owe is going to go up and up, the interest you pay each month will go up and up, and then you will find you owe so much money you cant afford to pay it off.
Note that banks make a LOT of money from people who owe thousands on their credit cards and that is a pretty stupid way to owe money as the APR is so high.
If you can avoid getting a credit card then do so, OR be prepared to pay it off each month.