just click on the link and your video should pop up. I did see something in one article that based on the content of your facebook (the quantity of your pictures and posts) you may either see a video, a collection of photos, or just a "thank you" note.
there isn't a green button on my screen. I found a link to a similar compilation called "Year in review" and there is a green "share" button on that, but "A look back" doesn't have it. Does anyone else have any advice?