Tabletop Titans has a tutorial on using inks on a white base to create a sort of “watercolor” look to your figures. I very much like the look and am trying to decide on what unpainted project I could use the technique. Actually, I’ve been thinking about getting some of those woodland creatures figures and doing a “Mouseguard” game. The watercolor look would be just right for that.
The Ultimate Model Paint Conversion Chart is an interactive chart that lets you find equivalent paint colors between different manufacturers’ lines of paints. It also lets you generate a pdf of your chart to take to the store.
Useful.
The Itinerant Wargamer blog has an article on speed painting horses.