Dan Knauss's Projects
WordPress Advanced Administration Handbook. This handbook will have the most technical, general, documentation about WordPress.
WordPress Hosting Team Handbook
Taming your WordPress user sessions, to help reduce the chance of session hijacking
WordPress Develop, Git-ified. Synced from git://develop.git.wordpress.org/, including branches and tags! This repository is just a mirror of the WordPress subversion repository. Please include a link to a pre-existing ticket on https://core.trac.wordpress.org/ with every pull request.
Our book about WordPress. Version 2
Email users directly from WordPress by role using a published custom post type and wp-cron