Five YouTube Secrets. Number one. Over on the left-hand side, click on Movies and TV, then click on free, and here you can see all the different free movies available on YouTube, and there are some really good options. Number two. Click on your profile picture, then go down to appearance, and select dark theme. That is so much easier on the eyes. Number three. While watching a video, click on the settings gear, and you can adjust the playback speed. Number four. Click on your profile picture and then click on keyboard shortcuts. Here you see all the different available shortcut keys. One of my favorites, press the F key to toggle full screen. Number five. While watching a video, click on the three dots and then select transcript. This shows you a transcript of the entire video, and you can even search against the transcript.