I couldn't either when I started. My background was plumbing. I just worked through those example scripts and read the basic documentation at www.python.org . After much trial and tribulation and dare I say hard work I became familiar with it. If you wish to learn Python for Poser you may be interested in my Poser for Python Manual. I've basically re-written the Poser Python manual to produce the document that I would have killed for when I was getting started. It includes many example scripts.

Not withstanding the above we can run through it together if you like. As a first step try writing a script that iterates through the current figure and prints out both the internal and external name for all the body parts. We can then develop that further to export out the geometry.