I am currently using a “my custom functions” plugin to add some important code to my site. I would like the code to run every time they load a page. The code adds the free courses to to the user’s available courses. Can I use the hook wp_head to run this code, each page load? I could not get an answer from the plugin owner about when the code is run, and I would like to know for sure that it will be run. Thank you for this awesome site.