CELTIC KNOTWORK DESIGNS by Sheila Sturrock is a nifty little book. As complex as the Celtic knots appear, it all comes down to this, they can be reduced to curved and straight lines, the most important combination being the "small hearts". Sturrock says there are four basic hearts and she provides examples of each displayed against a grid. Almost anyone can create the grid as it consists of lines of dots applied with a ruler. These dots are then used as the basis for organizing the hearts, parts of hearts and straight lines that makeup the most complex design. The only other thing you need to study are the anima elements in the zoomorphic designs that also are based on hearts, parts of hearts and lines.One needs the following for making Celtic knotwork: the materials listed by Sturrock, patience, imagination. Not everyone may be a gifted needleworker, but those willing to work at it will be able to master this straightforward art. I am using this book to instruct young girls.