Learn to customize the footer of WordPress admin panel. Highly recommended for site developer or designer to provide customer support links or email address.
Learn how to display list of random post title from your blog or from custom post type archive in WordPress. Give more choices to your visitors or readers while they are reading any article.
Really Simple Discovery (RSD) services could be useful if you are using client software to access, read or write your blog posts. If you don't use such services for your site, learn how to remove this unnecessary meta tag in WordPress.
Learn to rewrite the custom post type permalink with post id on the URL in WordPress. Very useful for forum, listing related post type.
Giving away the WordPress version number of your site could put your site in harm's way. Learn to remove meta generator tag in WordPress.
Simple and effective way to place ad between WordPress posts (loops). Works both for blog post and Custom post type.