Preet,
If you really, really want to look deeply into the subject try the following two books from AIAA ~ Educational Series.
Helicopter Flight Dynamics: The Theory and Application of Flying Qualities and Simulation Modeling ~ by Gareth D. Padfield
Rotary Wing Structural Dynamics and Aeroelasticity ~ R.L. Bielawa
They are so complicated that it takes about 5 minutes just to determine if the books have been opened upside-down or right-side-up.
Dave