Free btc mining
How I can do free btc mining - is very popular question on the forums and social networks. Well, unfortunately you can't do this for free.
Why - you may ask? Because btc mining can't be free - mining process require expensive btc mining hardware, good cooling and huge amount of electricity.
So any time when you see some advertisement about free btc mining - you should understand: this is or marketing bullshit or "free mining" only mean what you can get some btc mining related service with some hidden cost.
Another sort of sites where you can see this "free btc mining" advertisement term - simple free games, bitcoin faucets or paid-to-click sites, which can get you some satoshi as reward or bonus, but you should do some work for this.
If you really want know about btc mining - you should read your article about bitcoin mining.