Fairly self-explanitory, but a few hints:
Once you start, there's the image area that takes most of the space.
On the bottom, the left side is the navigation, the right will be text descriptions; note that the two instances of red text are links to YouTube videos.

Of the navigagion space;
The little round shapes are eyes (prespective), with the two big ones, one on the right and one on the left, them being "forward" and "reverse," respectively.
While navigating, the prespective you are on will be highlighted.
If you want to jump to a perspective, click on the corresponding connected block or 'limb."