Uniquely Zcash is mined like other crypto-currencies, but like everything now suffers from increased complexity and low cost, I personally am also mining but do not sell what I advise, because selling now for a song you simply work for electricity and lower it low market, but if you wait at least to the level at which it was raised (800), you can already think about selling, and the funds will be a heap that is more useful and the mining will be profitable. All profit and patience!