RE: Fixed Pitch
If you can't fly the blade CP, you'll find the Walkera #4 to be impossible to fly. Yes, it's much more resistant to crashing, but it's also much harder to fly.
These things take practice. Either you need to stick with it, or get something REALLY easy to fly such as a counter-rotating helicopter (Blade CX, Esky Lama, XRB, etc.). At which point, you may get bored, because these helicopters practically fly them selves.