I'd recommend an older version Real Flight simulator sold in many venues. Most have biplanes on them, 3D airframes, electric motor gliders, and other types as well. They are VERY realistic. Of course nothing is like flying at the field, but most of the guys I've helped learn to fly make great progress using the simulators. Get a good sim for $75, use it a while, sell it for $65. Better still, keep it for practice.