Hey, I'm using 2.5, still works!

Not to be contrary, but if there's ever a good place to get used to using rudder with your left stick, it's on the sim. I encourage it!

Just take off, get to altitude, and pull aileron & elevator to make a turn. You'll notice the nose of the plane is high. Add some rudder, you'll see the nose line up with the plane's line of flight.

If you crash... restart! That's what sims are for!

After about two sessions, you'll find yourself doing all sorts of rudder work, one wheel touch & go's, knife edge, etc.

Good luck,
Dave Olson