You might try Clear View RC Sim. With a highspeed internet connection you could download a trial version which shows you a few helicopter and airplane examples. Also some "movie" demos of a couple of models. To fully activate it and keep it is $40, get a connection chord $10 +/- and one of your transmitters or a dummy (Cost for that???)..........
http://www.clearviewrc.com/forum/

Or buy a used one, but you need to be careful in getting activation numbers and with RealFlight the former owner's de-registration from their "corporate headquarters".