Here are the steps to upload a video to Instagram:

1. Open the Instagram app on your phone.
2. Tap the "+" icon at the bottom center of your screen.
3. Select a pre-recorded video from your library or take a video in the moment to post.
4. Edit your video by selecting a filter or trimming the unwanted parts.
5. Write a caption, tag people, add location, etc.
6. Click Post to upload your video.

If you want more detailed instructions with pictures and videos, you can check out this [step-by-step tutorial](https://metricool.com/how-to-upload-instagram-video/) from Metricool.