The Michael Aaron Piano Course Lesson books have been completely re-engraved, expanded (adding more definitions of musical terms and more musical pieces), updated (with modernized artwork), and re-edited (with less emphasis on fingerings and more on note-reading).
This was my very first instructional piano book. As an eight year old eager to learn the instrument, I found the introductory lessons easy to follow and the beginner exercises quite adequate. It did help that I had an A-class music teacher as well. This book providers a solid foundation for budding pianists to develop their musicianship, dexterity, and is an excellent introduction to music theory.