If you’re looking to study outside of your units, the Real Media section is the right place for you!
Go to the Catalog and click on Real Media. You can use the search box to look for activities that are most interesting to you with relevant, task-based content from the real world that is updated daily.
You can filter activities by level from beginner to advanced and also by media types such as video, conversation, image, and article.
If you want to focus on improving your vocabulary, check out this article Use the Word Bank.