Unlike many flute books which give long series of exercises, but no instruction on how to play the flute, the Illustrated Method for Flute uses the resources of language, illustration, and photography to help you to learn to play the flute quickly and successfully. It is based not only on the musical and teaching experience of its authors, but also on current research in the physics of sound production in the flute and physiological and anatomical aspects of flute playing. Great care was taken to carefully describe the workings of the muscles, the breathing aperture, the acoustical principles, and the common phenomena (such as vibrato) associated with the flute. The Illustrated Method For Flute also includes five brilliantly written etudes and a fingering chart for easy reference
I disagree with the author's assertion that jogging does a lot to improve diaphragmatic strength. I think Kundalini or Tibetan yoga does a better job and it teaches breath control as well. Other than that, this is a fairly good method book for improving your flautist abilties.