Is there a tutorial on creating new characters and saving them back to library? And where! If I create. Main interring variation of le femme for instance and want to name her a character in my story, do I file her back under la femme 2 ? So I can call up  GIRLFRIEND when I want her for a scene? 

And character in the library but don't use the same name or you'll overwrite the original. You can use any name you want. Here's a selection from my last story.

Most of the guys are either Mike 4 or L'homme.

Most of my characters are either premade morphs I downloaded like Lee Homme or dial spins of morphs of individual features, like L'Homme Head Shaping morphs. Once you have the look you want you can save it to your library by hitting the plus button on the bottom left of the library. You'll get an option to include any clothing conformed to the figure and parented props save automatically.