You're welcome.
First, for townships:
https://www.wikitree.com/wiki/Help:Category_Names_for_Regions#United_States_of_America.27s_Regional_Categories What is not quite up-to-date in that help is that in eastern PA, townships are often like the NJ townships, and this really is mostly in the areas around Philadelphia. We have Radnor Township (an incorporated township) in Delaware County and it's named that way, but the place is locally known as Radnor, Pennsylvania, so it could be named that way (but isn't for whatever reason).
All I can say is that I learned by diving in and asking questions and studying how things were done. I made a lot of mistakes, but learned from every one. Our categories are not perfect, of course, and there are exceptions for everything. I did try, while I was leader of Categorization, to help people learn by creating a couple of school series pages. (I believe they may need to be updated at this point.)
What you should know for creating cemetery categories is that the CIB should now be applied to every new cemetery category. It's a database category suggestion when a new one is added WITHOUT the CIB. See:
https://www.wikitree.com/wiki/Automated:DBE_Categories_Suggestions for suggestion number 7001, the first one in the list. As of this moment, there are 381 cemetery categories without a CIB applied. What parameters must be included? name=, parent=, coordinate=, location=. If one of them is missing, it shows up in suggestion 7003!
Anyway, we also have a basic setup when a category is created with a location, which is created as Location, Theme. This was approved several years ago in order to improve consistency in our category naming. This is why you see categories like [[Category:United States, Notables]].
So, my advice is that to become a better categorist, practice adding/creating categories. If you are unsure about a name, ask in g2g and tag "categorization". Someone should be able to help you out.