Baccus 6mm has a good painting guide for the English Civil War. There’s also information on flags.
painting
Zombie Speed Painting Tutorial
The problem with Zombie games is that you need so darn many of the things. Painting them becomes a logistical nightmare. Here’s a tutorial on a zombie speed painting technique.
How To Achieve A Natural Metal Finish
If your miniatures games involve airplanes — especially early jets — you need to paint your models with a natural metal finish. Swanny Models has a good article with ideas on how to create a natural metal finish.
Painting Stubble
The painting geniuses at Slave to Paint have this guide to painting a five o’clock shadow. I wouldn’t go to all of this trouble on my wargames miniatures, but I also have on occasion painted individual role playing figures for sale on EBay. This would be a good painting technique for such “character” figures.
Keeping Track Of Your Paint Schemes
The Paint Machine blog, in a post on painting Landsknechts, has hidden a great tip on keepign track of your paint schemes: at each stage of the army, take a digital photo of the models and the paint used. That way, if you have to add figures, you have a record of what colors you used.