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Most of what you are looking for is in the Metrics Browser which is on the left hand side of the GUI once you click into an application.
Docs can be found here https://docs.appdynamics.com/display/PRO44/Metric+Browser
You can also get to these via the API's as well.
Docs can be found here https://docs.appdynamics.com/display/PRO45/AppDynamics+APIs