If so, this book is a total waste of money. You learn how to read notes, rhythms, intervals, accidentals, and eventually chords on all the clefs. Tenor and alto clefs can easily be Wikipedia-ed any time. The book also eventually teaches you analysis and figured bass, integrating music history and all that good stuff, but the bottom line is that if you've played an instrument to any level of competency before, or know any shred of music theory, this is a waste of your money.