The Ninja Program is a free program for students and educators to learn how to use Google Apps for Education in a fun and social way. Study, take tests, earn badges, and become a Ninja Master. http://www.ninjaprogram.com/
Encourage your students to do this and they can be your Google tech support in class.
My Google Tools Tutorial Videos in One Playlist (great resource!)
Why a Chromebook? Online tools for these common tasks.
Chromebooks work even when offline:
Enable offline use of Drive/Docs: https://support.google.com/drive/topic/1628465
Some other webapps also work offline: https://chrome.google.com/webstore/category/collection/offline_enabled
Example of backup plan for when network is down: have students write a paper or create a presentation. It will sync to their account when the Chromebook gets a network connection.Chromebooks beyond the cloud: Everything Chromebooks can do offline: http://www.pcworld.com/article/2453999/chromebooks-beyond-the-cloud-everything-chromebooks-can-do-offline.html
Great Site on Chromebooks and Google Apps from other school districts:
This one has some great tutorials on it: https://sites.google.com/a/ucps.k12.nc.us/chrome-cabinet/tutorials
Online Safety resources:How not to get tricked: Your favorite online safety tips