Here are some web sources to learn more about BibTeX:
A nice mapping of BibTex types/fields for CSL has been posted by Joeran Beel on 8th August 2012: https://www.scss.tcd.ie/joeran.beel/blog/2012/08/08/docear4word-mapping-bibtex-fields-and-types-with-the-citation-style-language/
Here are the figures showing the mappings of types and fields:
