Flight Simulators used for hobby are very much incapable of teaching flying skills and generally build bad habits for pilots in training. Later in training, these can be hard and expensive to unlearn. Common bad habits are fixation and improper instrument scans and interpretations. Realism, even with the very expensive add ons available from very distinguished sellers are minor, at best. Years ago I was very much involved with Flight Simulator 9 (here also on behalf of Jeppesen which published SIM Charts) and think that they have limited potential for use as procedure trainers for instrument training unless the training is supervised/ guided. Microsofts Water Model causes highly unrealistic behavior for seaplanes, plus none of the skills you will actually need are brought across. The one thing good about MSFS is a group called VATSIM, which is a virtual air traffic control network. People who have flown FS9 & FS10 on Vatsim for any extended period of time have better radio skills and more procedural knowledge and much less fear of ATC.
However time on hobby devices is not loggable unless the software is used in connection with a instrument procedure trainer, such as an Elite or FAA approved training device. Gone are the days when a Instrument Ground Instructor could help you learn on a desktop you have at home. Finding a used Elite at a reasonable price is an act of war, probably more so here in good old Germany. We have just changed from the previous training regulations for instrument pilots and the plan is to offer Skill Based Instrument Ratings, current situation in Germany is one of complete and utter confusion.
I don't know how old you are currently, but I do think that the use of the flight sim is something to limit and do just for fun (MSFS9 has a instruction program) and you can spend your time in Germany with studying for the written tests and reading as many aviation training books as you can. One thing I cannot stress enough is to use the time you have here with taking Glider lessons, because here it is cheaper than anywhere else. Here in Anklam you spend 500 Euros and get a Glider License (or the training leading to it) within a year. You will not pay for aircraft rentals, tows or dual instruction. There should be glider fields around you, so something to look into in Spring of 2015.
This will give you a solid, affordable foundation of skills which will positively affect your ability to fly by the seat of your pants.