It's true the book has typos and minor errors. However, it is still an amazing book. This is probably the best introduction to superconductivity ever written, from a pedagogical point of view. Not good for the expert, because it spends so much time explaining basic principles. However, for the beginner, this introductory book will not be an insult to your intelligence, and it will not waste any of your time. It goes straight to the important topics, and overview of current research while building up all the fundamentals needed. Some knowledge of solid state physics is recommended, in fact, probably essential (I can't see myself reading this intro without knowledge of ss physics). Anyhow, what I really liked about the book is how it spends time discussing each topic it introduces - for example, a thorough discussion of macroscopic coherent states is provided, and this is used to motivate the form of the BCS ground state wavefunction. I don't recall seeing this in other textbooks, at least, not at the beginner level. And the presentation by this author is impeccable (apart from the typos) and makes a lot of sense. This book is highly recommended.