How to install GNOME on Ubuntu 16.04 LTS

This is quite simple, just run the following:

sudo apt update
sudo apt install ubuntu-gnome-desktop

Once complete, you can log out and log back in with the option of using GNOME. To find this option, simply click on the Ubuntu logo next to your username.

GNOME is a popular desktop enviroment, which is faster and more minimalist than Unity.