Robinhood :
Robinhood stock exchange company starts selling cryptocurrencies. You will be able to buy all the crytocurrencies in their list with your US Dollars. If you use the link above, you and I get free stock shares. Thanks.
Cryptocurrency List on Robinhood:
-bitcoin
-Ethereum
-Ripple
-Bitcoin Cash
-Litecoin
-Qtum
-Ethereum Classic
-Stellar
-NEO
-Zcash
-Monero
-Dash
-Bitcoin Gold
-Lisk
-OmiseGo
-DogeCoin