Internet payments, the credit card a very convenient means of payment because the insurance of goods etc. Borrowing money through a credit card can be a costly form of loan because the interest rates often higher than other loan types.
Most credit cards are Visa or MasterCard. These are widely accepted, therefore, almost everywhere. Today need to get a credit card (the card fee) will no longer be expensive, many providers offer cheap cards. Sometimes this card contribution the first year or the first few years free. But look closely at all conditions, noting especially the interest.
For specifications and conditions, please refer to your question online credit card provider to use.

A credit card to buy on credit, in fact, it can be seen as a form of borrowing. However, the recorded amount can always be repaid. When this is done within a certain period, no interest need be paid. When this period (usually one month) is exceeded, there is interest.
A normal bank card (debit card) is a debit card. Payments it made to be directly from your bank account. With credit card is not the case. If you do not want to pay interest, you must look after the expiry of the period (eg one month) to return the money to your credit card. You can pay later or in installments, but in this case, you pay interest.