Hi there and welcome.
This is a pretty good starter here, did you try it?
http://www.simmerspaintshop.com/foru...ng-fs2004.html
It explains the programs required, what they do, and the basics of handling the files. Admittedly, it doesn't go into detail on the actual painting, as that's all pretty generic methods, and much of that is really where each person's own style comes through.
If you're hung at any one point, let me know and we'll try to get you going.