I had a really hard time finding any beginner friendly info on AidenLx's Zotero plugin despite it potentially being the end-all zotero plugin, so I have written up a summarized guide to it on github here with all the information I could find distilled into a single page for how to use it and how to start making templates.
Please drop any feedback you have here, especially if you have any advice on how to make it better. Thanks!
Follow Up FAQs
Q. Can you say what make AdienLX's plugin better than the Bibnotes Formatter plugin (or other implementations)?
A. Check out this comparison thread here. Right now I would say personally, bibnotes formatter is the most feature complete but is also very "jank" and pretty much does not work for me at the moment. The AidenLx plugin interacts directly with the Zotero database and thus is very fast and very smooth in experience, especially when updating a note. It also has a many features as bibnotes (almost, see the custom frontmatter issue) but these require knowledge of javascript / eta in order to do more than the basics.
That's what the guide is for ;)