This book deals very little with special concerns of coaching young athletes. There are a few chapters about communicating with young athletes and a few schedules (nothing special) for runners of different ages. But most of the content is simply copied straight from Running to the top. You don't probably need this book, it's much thinner than Running to the top. If you want to learn the Lydiard approach, the best thing to do is to simply buy Running to the top.