Advanced WordPress Set up is a set of additional options and/or upgrades that extend the document Getting Started on WordPress.
As in most CMSes, there are many ways to do the same or similar things. While Getting Started on WordPress is meant for general beginners to take the quickest and easiest path to IndieWeb-ifying their personal site, there are additional and alternate options for many of the moving pieces. Many of these can be found below, roughly in the same order as on the getting started page.
Advanced users and developers are more than welcome to browse through these as well as the WordPress/Plugins page. Additional guidance for portions can potentially be found on individual wiki pages for particular pieces of functionality in the IndieWeb Examples sections for members who identify as WordPress/Examples.