I found on the net some very detailed tutorials on :
PMDG : B737-600/700/800/900
PMDG : B747-400
PSS : A340
These documents are .pdf files, in French or English (some are about to
be translated as I could read).
I downloaded one of them, it's easy to understand, even if you don't
speak Frecnh (each procedure has been numbered in a 1 to 10 step
process).
More over, it's free.
this 'website' (how can I tell 'website' for a 3 pages site !!!) is
here :
Have a look and enjoy.
Regards
Sup'mdg