A great article. I've been looking for a good article on grafting fruit trees for some time. I've never tried this yet, but I think I will be working on it this summer.
The author (Jackie Gray) shows you not only how to do the grafting, but how to get the root stock (plant seeds of trees that you like) for free, how to get scion stock (the part that you graft on and actually get the fruit from).
Have fun. I'll let you know how my experiments go.