What types of content are we looking for?
Just a few seconds will do, it doesn't need to be long or complicated. Just take a video like you would a photo, point & let it play! You can also video whilst you're walking along to take the viewer on your journey, or 'vlog' and talk to the camera to make it personable. You could introduce yourself or tell a fun fact - the key is to keep it short and snappy.
Note: please take your photos and videos in portrait aka vertically as this is the default format for social media, otherwise it can make it tricky to re-share your content.