There are flight sim forums, if you go for google, you will find some decent resources out there.
I used Microsoft 2004 a bit during my training, didn't get on too well with it to be honest. Always ended up sticking the autopilot in and then just putting the aircraft in different places so I could see what the instruments indicated. Helped me get my head around the indications, but that was about it. You'll find some experts somewhere with some decent tips.