don't expect to learn any hand flying skills from FS, it is good to provide an understanding of the instruments and basic systems, improve your instrument scan etc but it will be no reflection on the actual feel and forces experienced during real flight. There is nothing wrong with using it at an amateur level and that can be quite helpful, any bad habits you may pick up should not be too serious and can be ironed out during your flight training.
I would also recommend you consider using something like Vatsim, where you enhance the whole experience by having real life ATC from other simmers. It may be a place where you may find the more hardcore users lurking but many of them are quite good (real life ATC) and it is very similar to the real thing - it can certainly help with getting used to the big bad world of ATC at an early stage and making your RT more confident when you start flying the real thing.
good luck