I am wondering how to edit a video, it just takes me to the select a clip part and I select one, it doesn't do anything else!
The Top bar is the total recorded time for the video. (In this case, 25 seconds)
The Bottom has a more zoomed in section of the video if necessary. The yellow box is what you would actually upload. You can alter the length and start/stop position by clicking and dragging. The Red line is where it's currently previewing above (you cannot see the video preview)
Once you have found what you want to upload, you can then type in any comment you wish to have and then hit "Share Clip".