Every iOS device comes with an array of physical switches on the body. You can use the Home button for various tasks, as well as the weak/sleep button. The side switch and volume controls can be used for more than just controlling volume. You can also combine the switches and use movement to activate some functions.
With "My Queue" you can quickly save videos to watch later.
To add an item to your queue just click the sign next to the video.
Once you've added a video visit "My Queue" to start watching!