You can find Barclays’ VXX prospectus here. The prospectus covers both the short term VXX, and the medium term VXZ.
This post discusses going long on VXX.
This post discusses some choices if you think VXX is going to go down.
For a full list of volatility ETN/ETFs see Volatility Tickers.
The chart below shows the performance of a hypothetical $1000 investment in VXX vs VIX since its inception in early 2009—it’s not a pretty sight. The VXX investment would be worth $66 today… VXX should not be a buy-and-hold investment.