Great book. Not very fast-paced nor filled with action. Very fit for right before bedtime reading. If you want to learn a lot about North Korea, this isn't the book for you. However it is entertaining and with a lot of beautiful drawings. Definitely worth the buy in my opinion.
Many major printing flaws make some of the book hard to read and some of the pedaling is weird, especially at the revolutionary étude where it definitely differs from other versions. Overall good collection of the etudes but of low quality.