The only way to quickly learn coordination is to learn to fly a tailwheel even a PA18.
Or fly a glider.
When I take a power pilot for their first glider ride in my club's DG-1000 (20 m span), I get them to try a medium turn, using ailerons only. They are often very surprised by the 30º yaw in the opposite direction!
I've flown an SR-22 and I found it quite easy to fly - perhaps that's because of my glider background. I felt I would be comfortable flying it after another hour or two of slow-flying and circuits. The electronic systems were a whole different matter. I figured I would need multiple hours of study and airborne practice.
On my one SR-22 flight, I found myself often sneaking glances at the steam gauges below the display!