Robert Prechter published a few books about Elliott Wave

If you really want to learn, you would need to spend quite bit of energy. Which I don't think it is in your blood. LOL...

Many wall street firms also use the theory. 

However, I don't think we, average Joes, can master it for it to be very useful. 

研究这个理论的人也很多。和研究巴菲特的人一样。只要有成功的先例，就会有大量的人研究。和红学一样。 谁都可以读红楼梦，又有几个人真能搞懂？