First of welcome here, nice to meet you.
Second I'm fairly new since Feb or so.
Third, have you downloaded the skin pack for book 14?
The zip contains everything you need,except the instructions on how to's.
Basically you can reskin anything in the zip.
The zip also cantains the list ID's tags for every skins.
The way I learn is when I downloaded the skin from Ledmirage
I study the skindefinition file and the way he put his skins in different folders.
He renamed all his skins to his likeing,while my skins has the default names that come with the skin pack.
To me this is easier and less time consuming for me.