Re: speed: good question from kohai
My sensei said this in an iai context but I think it applies to most things. First learn it slowly, smoothly and correctly until it is internalized. Next it should naturally work up to blindingly fast. As you progress, after you have reached "lightening fast" it will slow down again as you discover and begin to internalize proper timing and distancing. Finally in an ideal world it will become whatever is correct for that given situation.