Hey!
Your question was already answered multiple times so I won't repeat what have been said.

Something you might want to know though is that even "mining devices" aren't so profitable...
Problem will be about where you live and how you get your electricity. The mining device is just an initial cost, it's just an investment. But after that you also need to power it! And even if that can seem weird (cause elevtricity isn't your first source of expense normally) electricity is FUCKING EXPENSIVE when mining.
So if you're in a developped country and you have a  normal access to electricity... Don't bother. Mining won't be profitable.