PMDG fantastic program, but where is there a sample of the fligtht panels as to be able to identify the controls (737800) herb

I am sorry, come again? There is a VERY extensive (and expensive!) set of manuals included. If you are new to high level of simulation, start with introduction, then tutorial.

Or if u into the high level sim u can always go for AOA, they cover not only what's been directly modeled in the NGX product, but also in the general aircraft systems. So glad I got myself a copy :D