Hello PrivateBS,
You will find out soon enough that all of the pilots will patiently attend to you learning how to fly the different airframes, but as CW2 Brownlee stated, the learning curve can be quite steep if this is your first attempt at flying helicopters in Arma. So, what flying experience do you currently have from Arma or any other flight sim with rotary aircraft? Regardless, D/Co expects a level of maturity in its pilots where hotshot flying is not the norm but a professional (if I can say that) unit of pilots whose goal is mission success with no air or ground losses at all costs.
You have as many setups to flying as you will find pilots as all of us have our own quirks about key mapping, HOTAS or keyboard, or mixture of the two.
All said, I highly encourage you to reach out and make the attempt and if nothing else you should fight and gain rank and experience with the infantry while you practice and learn how to fly helicopters. I will gladly fly with you if no one else is available to go over the concepts and foundations of flying.
Enjoy,
CW2 Stowe