Will you be studying with a DKI instructor? If your instructor is good, you won't have to learn all the theory that quickly. I study with KI and it is pretty well graded and progressive. Your instructor will have his own preference on tips and web sites books videos etc. If you've done what I'm reading, i.e. gone to a few seminars, and are now starting Kyusho jitsu with or without a black belt for background, then for awhile, just stick to your instructor's program. For basics, you will want a good college text in anatomy and physiology. A good acupuncture chart with descriptions of where the points are is another essential. These are better and more accurate than manikins although I like the manikins so that I can get a larger picture at a glance.
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The older I get, the better I was!