How do you use Chrome to edit your Google Files offline? You can work on files on a Chrome browser even when you’re not connected to the Internet. Chrome automatically syncs files in Drive, Docs, Sheets, and Slides so you can view and edit files offline. Watch these simple instructions! https://support.google.com/drive/answer/2375012?hl=en
Chrome keyboard shortcuts:
http://www.omgchrome.com/10-shortcuts-every-chromebook-owner-should-know/
Kathy Schrock's Guide to Chromebooks:
http://www.schrockguide.net/chromebooks.html
Nine tutorials - Everything Teachers Need to Know about Chromebooks:
http://www.educatorstechnology.com/2014/08/everything-teachers-need-to-know-about.html