Hi, well basically dash is another cryptocurrency. It is mined using x11 with 45 percent going to the miners. Then there are masternodes which require 1000 dash which you have sort of locked up in a masternode. 45 percent of the block reward goes to the masternodes. THe other 10 percent they use to pay the developers and the community can also vote to use that money for whatever they would like.
check out http://dashmasternode.org/what-is-a-masternode/
but its about 11 percent per year. and yes you can convert it to btc or eth and cash it out that way. Ideally I want to get 9 people to chip in 100 dash so with the price of dash right now 17,400 usd. any other questions?