Yes flying is kinda like riding a bike, but sometimes you hit that patch of gravel, stone, slick spot and wipe out. Even if your an expert at flying, you may have your problems. A sudden gust of wind on the downward leg or at take off. An engine stall, radio glitch, or even the newbie who tunes up his TX w/o checking frequencies first!!!

As for Flight Sims, as Tony the Tiger would say, Theirrrr GRRRREAT!!

Check this one out, its' free:

http://n.ethz.ch/student/mmoeller/fms/

It will help you identify your planes orientation. Is it flying away from you or towards you? Are you turning left or right? When the plane is coming at you, your controls are opposite. Practice, Practice, Practice...