No you cannot really earn a living with it. It's basically a Pyramid Scheme.
You pay them money, they send you a few sheets of instructions on how to place classified ads for them.
People send you money in response to those ads, Say it cost you $40.00 you then send on those payments to the person you paid the $40.00 to, and they reimburse you $5.00 of that $40.00 - it's a pyramid scheme.
Don't Fall For it.