Depends on the plane.

Basically, you land tail draggers the exact same way you land anything else. The approach and flair are the same.

The trick is to watch the gear and the fuse alignment. On some tail draggers, you can get a "three point" landing, where you touch the tailwheel at the same time you touch the mains. That's cool looking and fun to shoot for, but often close to stall. So, get the descent rate as low as possible, get the fuse level, and touch the mains as softly as you can, and let the plane roll along on the mains. As the speed bleeds off, add a bit of up elevator to lower the tail, and you're down. If you're on grass (something the G2 doesn't simulate at all), and you don't get in the up elevator, you nose over. If you go too much on the elevator too soon, you pop back up in the air. You just want a little bit.