As a new-ish piano player, I use this regularly. This was the book I was looking for when I was trying to get a foundation of what you can do on a piano. I use it often enough that it comes with me to any sessions I do, in case I need to reference a chord. I use it for scales and sight reading (to help me get used to the notes, since it's been a minute since I was a formal music student). All in all, I wish this had been the FIRST book I bought.