First off is a new well done documentary on a speculation tool that exceeds its stated purpose.
Next is a free ten part tutorial that defines the basic theory and then amplifies the concepts presented.
This is but one investment tool - but it is a valuable one.
There are counter arguments presented that deserve some thought also.
All of this at no cost to you.
Allow an hour to view the documentary - with some time to consider the implications.
If you find this intriguing, you will also find links to further information.
Go check out the documentary review at Speculation Rules!