Blog categories can optionally have a description that shows here.
This post uses the native WordPress gallery feature. The gallery will also show up on the Galleries page template since this post is not set to exclude it from that area.
You can embed videos in your post or page content. Here is an example from YouTube. Many other popular sites are supported. You can even upload your own video to WordPress. The theme makes the videos responsive so they show nicely on mobile devices.
This is an example of a post with barely any content — no image, tags or sidebar. Comments are off.