Lora S. Irish is a talented designed and author. She has the ability to make the complicated simple and accessible for we less talented masses. This book may actually be THE ultimate design source for celtic knots, as least for the novice/beginner.
Well-laid out, Irish offers background, history and origins of the Celtic Knot and a nice gallery of various media illustrating use of the Knot. She shows us simply how to understand the patterns and how they flow, including a great beginners lesson on plotting and graphing Knots, as well as layouts. I like her use of colored pencils to illustrate shadow and depth, and in so doing she gave us a little primer of their use, too.
You will not be disappointed in adding this book as a design source to your library, whether you are a gourd artist, woodburner, painter or just like to doodle.