Sometimes you want to share a video but only a certain part, or starting at a certain point. This can be particularly useful with a long video, but the part you want to share is 5 minutes into the video.
You can select pause on the video at the point you want to share and right click on the video then select Copy video URL at current time.
This will append your URL with t=###, with the ### representing the time in seconds into the video you want to share. You can then share that link that has been copied to your clipboard.
You can also click Share to get the link and set the time in seconds manually by selecting the checkbox for Start at: