Google has an education portal to let you know about relevant products and tutorials on how to use them. You can access this portal from the following link:
https://edu.google.com/intl/en_uk/
Within this portal they have a page exploring the accessibility features on the Chromebook which has links to YouTube video tutorials created by Google:
https://edu.google.com/intl/ALL_uk/why-google/accessibility/chromebooks-accessibility/
Finding Wifi Address on Chromebook