I dont' agree that he is difficult. I have his book "How to Make Profits in Commodities" 1951 Revised Edition by W D GANN, Lambert-Gann Publishing Co.,Inc. I refer to it often.
I am aware that in later life he shunned Wall Street and as a result many put him down. His systems for following seasonal, financial year and other cycles are very useful to the medium term speculator. Not in isolation of course but important to the serious student.
Instant gratification is just that, rewards come from long hard work.