Lori Davis has written an extremely valuable book for those wishing to learn how to master Paint Shop Pro. Because the program is so powerful, many of it's most exciting features can remain dormant unless you know what to do. This book, in a clear, easily understood fashion, walks you through even the most complex proceedures with well written explanations and examples, with images that illustrate her points. Layers, alpha channels, masks, and even custom made filters are covered well. I recommend it highly.