Are there any good introductory references for the syntax to create a BibTeX style (.bst) file, whose ease of reading is closer to an introductory text for a programming language than to a formal specification document for a programming language?
Obviously, as modifying bibliography styles is an advanced topic for a single facet of the TeX ecosystem, there's not going to be the same kind of pedagogical literature on the subject as e.g. for LaTeX. But I'm hoping for something that would allow me to grok, and write, a style file after an hour or two of reading rather than after a day or two of study.