Chrome Extension

Hello,

** I cannot code GMod scripts... only this sadly :( **

I'm apart of a student tech team at my school at which we will be managing all of the computers and Chromebooks at our school. We were asked to create a chrome extension app that will help teach students how to use the new Chromebooks when we will get them. I personally would like to hear from you guys what I should change (In terms of theme/look of it). It's basically right now a placeholder but I would like for it to look better. I made the box bigger so you guys can get a better picture, besides having to use multiple pictures for you guys to see it.

If you have any suggestions please give them to me :)

Thank you