Programmed, self-instructional workbook for nursing students. Previous c1995. This edition includes full-color illustrations; appendices on implications, cardiac anatomy and physiology, 12 lead electrocardiography, basic 12 lead interpretation, and pacemakers; practice strips, flash cards, and key points.
If you're going to study ECGs, start with this book. A good, solid, basic introduction. Do NOT do what I did and read Tomas Garcia's book first; this should definitely come first.
The book comes with flashcards, which are very useful in studying. There are a lot of practice strips - some of which had interpretations that did not match the rules described in the book (hence the four-star rating). But the only way to learn to do this is to practice, and having over 350 practice strips lets you practice quite a bit.
It does focus on a single lead (did I mention that it's the first book to study?), and the 12-lead section is only an introduction. I can't start to how well it serves that purpose as I read Garcia first.