"The Definitive Darts Coaching Manual"is a thin booklet of 70 pages which was published in 2012 by Anchorprint Group Limited. By now the second edition is on the market and a Kindle edition is available too. One can buy it at amazon.de, the price is 5 pound. The book come with a recommendation by Jamie Caven, just now David Kirby writes a book over Caven.
David Kirby was so kind to give me a copy to write a review. Contributed by Charis
Dartplayer SEWA-Darts - David Kirby: The Definitive Darts Coaching Manual: Your pathway to success