You can stop and start the video at any time, and watch the video as many times as desired. You can also click anywhere along the timeline at the bottom of the video player to jump to that point in the video. Please be patient while the video loads.
As the video plays, the "time marker", play/pause button, volume settings, etc. disappear. If you move your mouse over the video, they will re-appear at the bottom. You will notice a long bar at the bottom of the video. The dark grey shows the portion of the video you have not watched yet. The white part, or the "time marker" shows you where you are currently in the video and how much you have already watched. To change your spot in the video, simply click elsewhere on the line. You will also notice the video's length at the right side of the bar.