I found a book in my garage that I haven't read in the longest time, but I did want to share it with you as a recommendation. Jazz (and Classical) musician Wynton Marsalis offers up a book that gives an overview of music, it's history, the instruments, etc. It's done with the intention of being a basic education for kids, but even adults will find some great insight into it. It's called "Marsalis on Music"

You parents with kids who are learning (or considering to learn) music might find this beneficial. There's even a section of the book that discusses the benefits of practicing your instrument and how to overcome the anxiety and fear that comes with having to practice everyday.