There is a very good tutorial on flying helos in MS FS , I think it is still available on this site. Also see
http://hovercontrol.com/.
The secret is to have your controller axis sensitivities set up as shown in the tutorial with the correct null zones etc. Also never fly helos with the realism settings set to "high". Medium is more like the real thing. Rudder (torque) pedals are almost essential ( auto rudder just won't do).
A good throttle controller is also required ( which is your collective pitch control on a helo) so that you can accurately set torque (or manifold pressure in a piston helo). You need to watch the engine torque all the time just like with the real thing.
Because you have no "seat of the pants" feedback in the simulator and (unless you have a multi screen setup ) no peripheral vision, it is easier to fly from spot plane view, but since you need the flying and engine instruments you must open a mini panel with them on or another window with the panel view shown. In spot plane view you can watch for the dust effect and the aircraft shadows on the ground to help judge landings. VC view is a good compromise , but the instruments are often hard to read.
It is also a good idea to add a digital radio altimeter to your instrument set up ( available in many add on helos ) so that you know how far you are above the ground to the nearest foot when landing.
Always keep some forward speed in helos however slight as this helps keep control even when landing , but slow almost to a stop and flare for the actual touch down. Hover only when necessary, real helo pilots do not like to hover unless it is absolutely essential. Above all don't try to move backwards unless you are very experienced ( the simulator seems to become very unstable in backwards flight ).
The default Jetranger is actually one of the most stable helos to fly , as is the real Jetranger. The Robinson is much more "frisky" and requires much more constant adjustment of the controls.