Laszlo Jakusovszky has a tutorial on painting fire. Now you can do justice to those flaming pigs models that you’ve had in a box for years.
The Hot Lead site has a tutorial on painting wood textures.
Here’s a handy chart for converting between Vallejo and Games Workshop’s Citadel Color paints.
Vallejo model color is considered by many to be spot-on accurate for painting historical colors, but it’s so doggone expensive.
Here’s a page with information on converting from Vallejo to Delta, Folk Art and Apple Barrel Craft paints.
Jenova offers a page with a tutorial on using the blackline painting technique on your miniatures.