Getting a micro wasn't a bad choice, but getting a 4-channel P-51 might have been. This is NOT a forgiving plane in any size and it's that 4th channel that get's most newbies in trouble.

The reason for this is; people tend to think that ailerons control turning, they do not. They are USED for turning (in conjunction with the elevator) but they control the ROLL axis.

So to make a turn, you bank the plane's wing with the aileron, then hold it level throughout the turn with the elevator. If you want a tighter turn, you use more aileron and more elevator. It's sort of a balancing act.

The problem is people tend to tighten the turn by adding more aileron. This causes the plane to ROLL more, not TURN more. So they add MORE aileron until the plane rolls past 90 degrees, then it starts to drop, so they panic and pull UP elevator - but now the plane is beyond 90 degrees, so UP becomes DOWN and before you can say, "uh-oh..." the plane is toast.

The best thing to do is the find someone who is a GOOD, experienced flier to give you a few lessons