I practiced on G2 for over a year before I bought a plane. It definitely helped me. I'd say it paid for itself. It develops hand and eye coordination to the point I could fly without thinking about what inputs to give. As others have said, practice touch and goes in both directions, flying low and slow etc. with wind/without. Work your way up to stalls, rolls, loops, figure 8's, flying with rudder, rudder input during aerobatics and play with the control surface deflection on high and low rates, different engines etc.. Anything you can imagine. As you get better purposely put the plane in dire situations to practice and gain the ability to do the correct input instinctively to get out of trouble. Whatever you practice is what you will do with the real thing. Flying the real thing is not the exact same as the simulator. Very close but not exact. I still needed the aid of an instructor and buddy box and yes I still crashed a plane later, but my practice on the G2 paid off big time in shortening the learning curve.