How to Install Ubuntu 17.04 with GNOME on Your Chromebook, Alongside Chrome OS

So after a few months, I reinstalled Chrome OS using a recovery image that Google provides on their website for this sort of things, which I wrote on a USB flash drive and booted from my Chromebook. Recently, I got bored again, and so I decided to install Ubuntu on my Acer Chromebook 11 (C740) using Crouton. Why? Because of a friend who came one day at a meeting we had with his laptop, a Dell Chromebook 13, on which he ran Ubuntu Linux alongside Chrome OS. It was really cool to see him switch so easily between the two operating systems with a simple keyboard shortcut that it made me wanna do the same.