I want to learn how to use Blender more for my 3d printing modeling needs. Here is collection of tutorial videos I found you may find also useful.
Here is simple Blender 3d design for 3d printing tutorial by Jim Craig:
Here is one slightly more complex and detailed made by EcTechTime:
Tutorial by Benjamin Morgan on basic model and Blender setup preparing it for 3d printing:
Here is the entire playlist with many detailed Bender tutorial videos if you want to get into it deeper created by Jason Welsh:
Here is a detailed tutorial by i.materialise about preparing and checking 3d models for 3d printing: