To have full control over displaying posts in WordPress we can use WP_Query class and create our own query. According to documentation, if we want to to display posts in random order, we must pass suitable arguments to the query:

When you write your own plugin, you often want to add dedicated page for its settings. In this post I will show you how to do this.

Ajax ( Asynchronous JavaScript and XML ) allows us do action in asynchronous way – without page reloading. It is very useful and has affect on better user experience. We can for example add, hide or delete some content from site and there’s no need to reload whole page.

When you write your own plugin, you may want to send users to settings page after they activate the plugin. Here’s a simple tutorial of how to add additional links to your plugin on plugin page in wordpress.