I'm a little intimidated, and I'm not sure which StackExchange fits my needs as a complete beginner. I will likely be using Blender for the modeling.
I'm looking for "best practices" before a simple sort of figurine printing, I suppose?
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You could try the Blender Stack Exchange:
Blender Stack Exchange is a question and answer site for people who use Blender to create 3D graphics, animations, or games.
However, I suspect any site where you seek a list of best practices will be closed as too broad and/or too likely to attract opinions.