How can I buy Ripple XRP ?
You can just go through any exchange.
It is listed on bittrex, so you may want to get registered there and then load up some bitcoin into the exchange and then get XRP. It is as simple as that. I am not a great fan of XRP anyway but for profit, I would not say I did not get some as I saw this coming, so it is all good. However, for holding sake, XRP is not just my style as I am so tired of centralization.