If you decide, then start with an honest answer to the simple question: "Why do you need bitcoins?  " If you want to buy a crypto currency for quick speculation on buying and selling, then these cards are not for you, you better subscribe to the Coin Post telegram channel or other profile media and there learn all the subtleties. If you decide to diversify your investments due to bitcoin and make a relatively small number of transactions, then go to the next card  .