It can't really be said any simpler. There are several good RC simulators on the market. However, only one stands out as a viable multicopter training device. It is RealFlight. RealFlight Version 6 and above have built-in multicopters you can play with and even fly FPV. RealFlight is available at http://www.realflight.com. The following screenshot shows RealFlight in action:

The screenshot shows a Gaui 330X quadrocopter being flown by yours truly. Getting a simulator is paramount to your flying. Even though I am an experienced pilot, I put in a few hours every week on my simulator practicing maneuvers. The multicopters in RealFlight do not have all of the stabilization of a good guidance system. However, this is a good thing.

This is similar to a baseball batter in the box swinging two bats before he gets up to the plate. When he gets to the plate, he's more than ready to swing one bat. If you can get your flying in a simulator stable and smooth … the results when you get...