What is a WordPress Child Theme? Pros, Cons, and More

A Basic Explanation of WordPress Taxonomies – VSELLIS -

Worpress queries: When to use WP_Query, get_posts, query_posts or pre_get_posts

When to use WP_query(), query_posts() and pre_get_posts

What does apply_filters(…) actually do in WordPress?

What is Shortcode in WordPress?

A Brief Introduction to WordPress Nonces | Tips and Tricks HQ