All companies listed on this page I personally have accounts with and have had the ability to securely purchase bitcoin on my credit card. There are of course the security barriers you must over come but once completed you have a very easy solution to buying and selling bitcoin.
1 . Sign up - Create a digital currency wallet where you can securely store digital currency.
2 . Connect - Connect your bank account, debit card, or credit card so that you can exchange digital currency into and out of your local currency.
3 . Buy some digital currency - Buy some Bitcoin, Ethereum, and Litecoin to begin using the future of money.Coinbase