Buying Bitcoin with a credit card is simple. Coinbase is one of the oldest and most trusted cryptocurrency sites. Sign up on Coinbase is free. You do have to supply credit card and banking information in order to be able to purchase Bitcoin on the Coinbase site. While you would think using your bank account would be the quickest way to buy Bitcoin, the processing time may actually take a week before your Bitcoin is deposited. Once you have authorized and confirmed your credit card, you may use the card to buy Bitcoin instantly. Coinbase will make 2 small charges to your credit card. Once you have confirmed these amounts, you should be able to purchase your cryptocurrency instantly.
Coinbase also supports the instant purchase of 2 other altcoins. Both Litecoin and Etheruem are currently available for purchase on the Coinbase site. As the price of Bitcoin increases, the Bitcoin fees have also increased. For the potential altcoin investor, Litecoin may be a better gateway cryptocurrency simply because the fees are much lower. Of course, this scenario only applies if you are purchasing the coins at Coinbase with the intention of transfering them to an exchange in order to buy other altcoins.
Whether you purchase Bitcoin, Litecoin or Ethereum, you can transfer the coins from your wallet to the exchange you wish to trade on. As you transfer your Bitcoins you will see multiple confirmations being completed which will confirm the arrival of your Bitcoin in the wallet of the exchange.