For the philosophy of Jeet Kune Do you may read the Tao of Jeet Kune Do. While the book has little regarding actual JKD moves it is the notes of Lee regarding some of his thoughts. The student will find this interesting as you will find some contradictions and omissions that are in the physical aspects of Jeet Kune Do. Then you may read his four methods books that have some of the JKD moves. For the most detail you may read and look at the illustrations in the Original Jeet Kune Do Training Manual.