There is a big shift in Ubuntu towards a GNU/Linux distribution that uses snap installation packages instead of the traditional .deb packages. The video shows an early preview of that future distribution and I think it is the first such video.

These snaps are a big thing (see https://snapcraft.io/). Universal packages, with confinement, offering transactional updates.

For your case of this Core 2 Duo laptop, you can disable some of the fancy graphics effects in order to gain some extra speed. See how to do this at http://sourcedigit.com/21432-2-ways-enable-unity-low-graphic...

There is supposed to be such an option in the Ubuntu Settings but I did not find it yet. See https://ufuntu.wordpress.com/2017/01/11/enable-the-new-faste...

edit: I wonder why the downvotes...