Been at Aces High for about two years now, started from Tour15.
That was the year 2001, and before that, from about 1997~2001, been trying out various air combat sims, mostly Fighter Ace1 and 2, 2.5.
Learning anything seriously was mostly with Aces High, just about when the Fw190D-9 and the La-7 was introduced. I think I've got the catch on the basics, but like people say, it's still a long process of learning.
Recently, I'm learning to apply rudder-assisted high-angle/low-speed turns in combat during reversals. Still got a long way to go.