Thanks again for your clarification of parts vs. bodies. I just downloaded your tutorial PDF, and at first glance I am highly impressed!
You, and the FreeCAD community as a whole, are a great example of what such forums should be -- patient, positive, supportive groups helping everyone to grow and do better.
Myself, I tend to be one of those that need to be lead step by step the first time. Once I understand the "why" for doing something a certain way, then I can apply it to any situation and derive the "how to"; until then however, I'm like a baby learning to swim for the first time. So while a starting point may be intuitive to others, I'm one of those constantly asking "... where did that come from?" I truly appreciate your more basic approach as it allows me to better follow along and to better apply concepts to new problems later.
I'm hoping to give your PDF a thorough read this weekend and will do my best to provide questions for clarity and positive feedback so you can judge how effective you are being with at least one of the "lead by the hand" beginners.
Again, thanks for have such an great community.