You must first learn to walk, before you can run. After you get the hang of controlling then adjust the sliders to your skill level. Many due not feel comfortable at first, this gives the student time to adjust to helicopter controls.
Darren: In FSX f3 and f2 are the default throttle controls for all aircraft since the collective works on the throttle input I assume that these are also the default keys although I have never tried them and have reassigned them to other uses. David…