technical knowledge

hello all I know it's a bit late in life for me to start over a career in finance but still, I really do like trading and I want to do it better than I do now. Since I have no time to pursue a full time program, I'll have to learn by myself to reach a professional level in trading. That's the goal.

Trading equities and options now, next step is to trade futures only.

I went through the Hull and Bodie Cane Markus books, plus other numerous books but looking for more specific info about market math/probabilities/structure etc. where/what references would you recommend to acquire this tech knowledge ?

thanks for the information ! S.