Robert Fitts shared on his house church adventures having become interested in 1990. At that time he knew of no one involved in this other than in China. Nevertheless, he saw the potential and began planting.
After some time he felt that house churches would be stronger if they also developed a training component. He first called these "Home Bible College" but has since termed them Ephesians 4 Training Schools. These "schools" are simple and reproducible. He likes to see them planted alongside of house churches.
So... how does it work? The training school meets weekly and then includes assignments along with it. In short, when the school gathers, the students work through the Life of Christ in a discussion format, worship together, minister to one another, and eat and fellowship. In addition, the students read through the remainder of the New Testament on their own.
There is a bit more to it, but rather than go into detail I recommend that you take a look at Robert's website where you can read quite a bit of information about it.
Robert is also developing quite an extensive, informal "network" of house church coordinators to provide communication and resources to house churches within each region of the United States and then spreading out to encompass the world. Again, more info can be found at www.RobertFitts.com.