I suggest that you go to https://www.appdynamics.com/community/ and look at the several threads there.

And if you have specific questions that aren't already answered post them there.

It is also advisable that you take the "university" courses as they can be quite helpful - or alternatively hire one of the good consultants on AppD if you are lucky to have one on your own country (not cheap though)

Note that I am not a AppD consultant - just a user.