As the title says I'm not sure on what to do in weathering and I have yet to acquire the weathering materials first.

I'm planning to weather a panzer grey color scheme with the mig cold grey wash and either the mig warm or neutral grey filter (or which is recommendable?).

hmm lastly I wanted to try the tamiya weathering master and stick for simple effects? Any thoughts and advice?

If you do try the Tamiya weathering kits buy some extra makeup applicators as the one included has a tendency to shred after a few uses.

The filters depends on what effect you would have ,what front or in which season, but also goes to tastes, you prefere warm or cold shade? ...

For Tamiya products I never used but I could have never attracted me much