Considering how much I'm into my bass, I've never checked out any of Jaco's material. I don't know how that's possible, but most of my peers discussed Flea, or Claypool, or Geddy Lee, etc. Not until the mid to late 90's did I ever hear the word "Jaco". In my reading I was shocked to see that he died a horrible death at a very young age. It's disturbing to see talent cut short. I had to dig a little to find out how he died. The fact that it was so tragic was probably why it wasn't easily found on the official site. Although his rank as "the best" is disputed by some here, I believe you can borrow something from everyone and I will surely try to add some of his technique to my playing.