What is the fine-grained topic of the following text: I would start with this book: Alfred's Self-Teaching Adult Piano Course: The new, easy and fun way to teach yourself to play, Book & CD by Willard A. Palmer (Author), Morton Manus (Author) Only drawback, the book teaches you the keys as numbers instead of letters at the beginning, which can be confusing once you go to a letter book. Only return the topic.
Review and recommendation of Alfred's Self-Teaching Adult Piano Course book