As a subscriber on Matt Brown’s E-mini site for over a year, I have watched him develop and fine tune his system of charts and indicators to levels of insight into the internals of the market I never knew existed. I suspect few but the most sophisticated technical analysts are aware of these tools. His use of volume delta values are very highly correlative to impending price action shifts. Before these insights, now that I have them, it seemed that before, like I was guessing. If you want to move in the direction of being a professional trader, my goal, I doubt there is a better mentor.