First, and most importantly for a pattern book: the patterns work! After completing several of the delightful small projects in this book focused on mittens and socks, I am deeply impressed with the quality of the designs, the care that was put into the illustrations, especially for special stitches, and the reliability of the yarn recommendations.
The book also gives a delightful overview of Estonian culture and the history of knitting in this baltic Nation. The patters are a great balance of traditional pieces and some very fanciful adaptations. This is clearly not for complete beginners in knitting, but not all the projects are highly complicated, so there is no need to shy away, either.