I have heard and also read in various threads that mining is too risky. The invested money can all be gone with a blink of eye. Actually i am not sure wither i should do it or not. If i invest, then is there any chance to loss all the money?
If i invest, then what should be the amount first?
And in which sites would be better to do mining?
If you dont own the hardware, then its basically a scam. I've known some folks to have good luck with Hashnest, but they barely broke even.