The largest amount of explanatory material can be found from David Hixson, and his company/program Sentient Computer, or Trading or something. Very prominent on Twitter, and has a utube update weekly. Also, a discord server which he invites you to join. Various Twitter people are affiliates of Sentient Trader, notably David F.
One of the people on Sentient discord has posted access to several out of print sources. Find "parisboy" and look at his posting in mid Sept for those links.
Stay on the right side of the cycle!