I'm aware of this page on the manual:
http://manual.calibre-ebook.com/template_lang.html
However I'm not a programmer so I don't understand python. The thing I would like to accomplish is simple; changing the default order from {authors}/{title}/{title} - {authors} to {series}/{tags}/{title} - {authors}.
The strange thing is when this only works when I select all books and save them to disk. It doesn't work (and doesn't get recognized in the template editor) for new books. Also I can't select the newly saved library as my default library because it will just stay empty in Calibre.
What is the correct string to make my library save in this order?
Series / Tags / Title - Author