Here's a good tutorial on the "Dip" method
http://boardgamegeek.com/geeklist/43744/dip-method-step-step-guide-painting-miniatures
You can use wood stain for the dip, or you can use the Army Painter "dip" as well. Both work just about the same way.
It is a way for beginners to get into painting and get good results. Worked great for me when I got into painting a few years ago.