Quote from benwm:
I read Tunnel Thru The Air three times as Gann suggested (!) as well as many of his other books. However, I suspect WD Gann was nothing more than a snake oil salesman. Apparently he left $100k inheritance for his children, but when you consider that he wrote numerous trading books over the course of his lifetime, how much did he make trading? Probably little if anything.
Although Jesse Livermore probably should have taken 101 Risk Management given that he bankrupted himself four times, if you want to study a trader from the past he would be a much better choice IMHO. There is little doubt he also made several millions over the course of his lifetime.