Olicanalad has a blog post with a photo tutorial on painting with enamels.
painting
Painting Checked Patterns Tip
Iron Mitten has a tip on painting checked patterns on your miniatures. He uses it on Celt Cavalry, but there are innumerable periods that could use this tip.
Using A Wet Palette
Two good videos on using a wet palette for painting.
Painting Flesh On Miniatures
I have long had trouble getting large swashes of flesh to look right. This video is helpful.
The Complete Future
Matt Swan has a web page describing all of the varieties of Future acrylic floor wax, and their uses in modeling. Miniature Wargamers, of course, have discovered the use of Future in making washes that easily provide shading on painted figures.