This is a stellar article. I feel that style guides are an integral implementation for a number of reasons. Primarily the consistency facilitated by a style guide can dramatically lower the overhead both in development time and getting various contributors up to speed with a project.
There are a ton of great style guides out in the wild, and this article outlines a lot of prevalent guides. Beyond listing them, Addy goes on to critique the differences between them. Then he discusses applying them through code samples. I’m smitten with Addy’s contributions to the community and he continues to hit home runs with assets like these.