I have been a web/graphic artist for over 15 years. Luckily, I get to do it at home, but it took a great deal of training and work to build it up. I still struggle horribly some months.
In all these years I have yet to come across someone who is making a decent living through some "work at home" offer.
You need to be trained is a field that has a valid need and is actively seeking to employ homeworkers, such as Freedom1990 is doing. The medical billing industry DOES hire home workers, it can be verified. So instead of experimenting with those making "offers", find industries and companies that actively employ at home workers and find out how to get training in that field.
Best of luck,
