I used this book in a course that was offered to upper year undergraduates and 1st year graduate students at Queen's University.
The material is fun to teach and the books is excellent to teach from (and the students enjoyed the course a great deal!). I could easily let the students read things I didn't have time to finish in class, as the book is easy to follow, contains all the necessary proofs, and is remarkably free of errors.
For the teacher, the tutorials are a real bonus. They allowed me to tailor the extra work I gave to the students in a way that took into account their background -- easy tutorials, or pieces of tutorials for the undergraduate students and more demanding tutorials for the graduate students. I have to admit that I enjoyed the tutorials myself as they took me to places I hadn't visited before!
I would strongly recommend this book to anyone contemplating teaching this material and I would strongly urge that this material become part of every undergraduate's training.
Anthony V. Geramita