I've had this question a few times today, so I thought I'd share this here.
Remember how I was showing you how to drag a window to the left to dock it to the left, then drag the other window to the right side of the screen, and it'd dock to the right? This lets you see instructions on one side, and your work on the other.
Just found out there's a shortcut for this. ALT
Here are some more Chromebook shortcuts
Pay it forward and pass it along!