Filter a Family Category and Find parameters of All elements

Hi I’m new to dynamo, our CAD bureau has decided to model all architectural wall openings and windows so they can be individually identified, scheduled etc. I’m trying to use the model (dynamo) to identify these openings at each level, and create a list with all openings, level and services penetrating them from a linked model so that I can input correct fire stopping details where applicable.
Could anyone help?
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The best would be to decompose the workflow in very simple tasks that you can achieve on your own, with some little help when you are stuck. You could start by searching threads about how to filter elements by level, for instance.

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