https://code.tutsplus.com/courses/coding-advanced-wordpress-theme-templates

Template files are at the heart of every WordPress theme. And if you've already gotten started creating WordPress themes, chances are you have some experience with coding template files. But there's always more to learn!In this course, you'll learn how to customize your themes with advanced theme templates. You'll see how to create an advanced WordPress theme for a blog. Along the way, you'll learn different ways to code the Loop, how to create templates for custom page and post types, how to create templates for custom taxonomies, and how to use conditional tags to make your templates more flexible.