The point here really, ignoring the detail, is gaining the experience to understand, trust & value the superior information that the outside view gives you on what the aircraft is really doing.
Personally I didn't really get this until doing the IMC rating when the outside view is taken away from you - this rammed home the fact that the instruments can fail in some very difficult to spot ways which will give the wrong information that, in standard vfr conditions over land, is impossible to get from looking outside.
Maybe work through, with your instructor (it's their call based on where you're up to on your course), how you should react if AH, ASI, tacho, altimeter etc fail in flight as it will, if nothing else, get you thinking about & realising the value of the outside view.
I used FSX for practicing IMC procedures (+ one big sheet of A3 to cover the top half of the screen) but found anything else was pure gaming - good fun but about as useful a flight training aid as GTAIV
