Because Gann is popular, the "Gann course" market is full of garbage. Here is your roadmap:
A proper course bridges the gap between mystical geometry and actionable trading setups. wd gann courses
But Gann was notoriously secretive. He wrote several books and sold courses for astronomical sums (up to $5,000 during the Great Depression), but he deliberately obfuscated his methods to keep them from the masses. Because Gann is popular, the "Gann course" market