So every day, the website content will be updated, therefore, the most recent box, is the most recent announcement, joke, or even video that has been uploaded. As you click on these posts, they will have a category for instance here : (Joke of the Day is the Category).
If you click these categories, you can find all posts related to that category. So for this example, it will take you to all of the jokes that have been posted so far and for this post you are currently viewing, the category is Announcements. Happy browsing!