This is the easiest trombone instruction book. As the name suggests, it has very easy-to-understand explanations and progresses one-on-one with a teacher, so you can learn the basics thoroughly. It's the perfect instruction book for those who are new to the trombone. It's a good learning material for those who are starting the trombone in a club or those who are unsure about positions, as it allows you to learn the basics. Thank you. 0515