This tutorial helps you understanding lines and nodes in Inkscape. I'm not the best of an artist myself, so I used an image of a crafts tutorial I liked. Here's the link if you want to learn how to draw this nice kitten by hand: https://www.youtube.com/watch?v=qqon8BQTcK0
This extension is util for who want to learn the base principle of python language and in special for who want create for first time or want to understand how request all paths or nodes for ulterior custom programming.
This small inkscape extension return path,subpath,node ... so is util forexample when want to know coordinate of a node or when want create a script for rotate path.