For users who want more than Chrome OS, there is the option to install Linux natively. This allows for a more complete OS that gets rid of most of the limitations of Chrome OS. This method removes Chrome OS from your Chromebook and turns it solely into a Linux machine.
Complete Crouton Installation Guide (Linux on any Chromebook)
What is Crouton? Crouton stands for Chromium OS Universal Chroot Environment. It allows you to run full Ubuntu on top of Chrome OS. Unlike dual booting, you can easily switch between Ubuntu and Chrome OS with a keyboard shortcut, no reboots necessary.
Install Android Apps on Chromebook
On some Chromebooks, you can now download Android apps from the Chrome Web Store and the Google Play Store. Yes, that’s right, the same apps that run on phones and tablets can now run on Chromebooks without compromising their speed, simplicity or security.
How to Enable Developer Mode on your Chromebook
Putting your Chromebook into “Developer Mode” will allow you to have full root access, including the ability to modify your Chromebook’s system files. This is often used to install a Linux system alongside Chrome OS like Crouton. Enable developer mode has other uses, too.
Get the Latest Features of Chrome OS (Switch Channels)
Switching channels is a way to get the latest features before they roll out to everyone. Keep in mind that choosing to enable experimental features may result in crashes and bugs.
Upgrade the SSD in a Toshiba Chromebook 2 (2015)
The Toshiba Chromebook 2 (2015 Model) does not come with much storage by default. Both the CB35-C3300 (Celeron 3215U) and the CB35-3350 (Intel i3-5015U) Broadwell models only come with 16GB of onboard SSD memory.