I published a Kindle article for painting a child in an oil style from a photo in Corel Painter 12. By the way, you don't need a Kindle to read Kindle publications. Amazon provides free Kindle apps for every device, including desktop computers.
Click here for the Painter Kindle article.
Meanwhile, I was interested to see how Photoshop CS5's new painting tools compared to Painter's, so I took Photoshop for a spin and published the results as a Kindle article here. My conclusion? Photoshop's painting features are a nice addition, but they don't replace Painter's!
Happy painting!
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Karen Sperling, the original Painter expert
Author and Producer, Painting for Photographers Book + DVD
http://artistrymag.com/
http://www.karensperling.com/