PHP for WordPress - The Loop, Conditionals, Hooks and More!
How to Work with Child and Starter Themes Like Pro
The Ins and Outs of the Template Hierarchy - Always Know What File to Customize
The Complete List of Template Tags To Use When Customizing and Extending Themes
A Deep Understanding of How to Use Action and Filter Hooks to Programmatically Control WordPress
A Solid Starter Template For Building Your Own WordPress Plugins
Common Practices and Techniques for Building Custom WordPress Plugins