Easy guides how to buy Dash on online exchanges
Buy / Exchange BTC - Dash on
https://Exmo.com
Buy Dash at Poloniex
https://poloniex.com
https://Shapeshift.io
Full list of Dash supporting Exchanges:
https://dashpay.atlassian.net/wiki/x/MJI5Bg
Trading Volumes:
http://coinmarketcap.com/currencies/dash/#markets