Like other web browsers, Opera comes with a default home page. Odds are you're going to want to change it. Opera gives you quite a few options when it comes to a Home page. You can use things from saved sessions, the last session, a blank page, and more.
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!