A Bitcoin transaction can win and opening a short position or sell?

[FIRSTIceman]

 Hello colleagues on this forum.

I traded the stock market and forex is why I would like to understand the mechanism of winning here. If you can open a short position or sell it we gain if the price drops?
In order type Forex sell there (you win if the price drops) and order management buy (in which you win if price increases). On the stock market only win if the price increases. In conclusion criptocurency works as Forex market? I mean you win and orders seel and buy order? Or works as stock market, winning orders only buy when price increases?
 I hope you understand what I asked, but of course this can answer only who traded and Forex. I mention they do not have any money in mining, but simply want to go on and win market by opening a sell position.