How can I see if my course is active or not?

If you click on the Home icon at the top of the page, and scroll down to the My Modules, you can see which of your courses/modules are active (available) or not. See the image below to see where this is shown next to each module.

For a step by step guide on how to make your module active, follow the steps on this page: https://www.ul.ie/brightspace/articles/how-to-publish-your-brightspace-module-make-it-active