2d image to 3d model confusion, need help

[diari.yae]

what exactly is the guy doing here? https://www.youtube.com/watch?v=T1jscj6oAfs

I want to create a 3d model from the image and I follow these steps but he is probably clicking something on his keyboard, can anyone explain?

like, the first 2 minutes, I'm completely lost.

also how do I move a front view to the side view? I started working on a picture to make it 3d but I put the side view (picture) in the front 

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