These directions are helpful if you wish to add other languages (French, Spanish) to your Chromebook. Adapted from https://support.google.com/chromebook/answer/1059492?hl=en
Log into your Chromebook
Click settings gear which is available in the lower right of the screen by clicking on the time then the small gear which appears at the top of the window that opens.
Watch the video to the left, follow the actions in the video on your computer.
Turn on "Show input options in the shelf." Your current keyboard language code appears on the shelf, next to the time.
Select your keyboard language code.
In the "Input methods" box, select the language you want to switch to.
Tip: You can also switch your language by pressing Ctrl + Shift + Space until the language you want is selected. To switch back, press Ctrl + Space.
The U.S. International keyboard has the following accent marks:
Acute (´) ' then letter
Grave (`) ` then letter
Tilde (~) Shift + ` then letter
Circumflex (^) Shift + 6 then letter
Umlaut/diaeresis (¨) Shift + ' then letter
Cedilla (¸) Shift + AltGr + 5 then letter
Use the following combinations to type specific international characters on the US International keyboard.
Important: The AltGr key is the Alt key on the right of the keyboard.
Acute (é) AltGr + e
Acute (á) AltGr + a
Acute (ú) AltGr + u
Acute (í) AltGr + i
Acute (ó) AltGr + o
Tilde (ñ) AltGr + n
Umlaut/diaeresis (ü) AltGr + y
Umlaut/diaeresis (ö) AltGr + p
Umlaut/diaeresis (ä) AltGr + q
Cedilla (ç) AltGr + ,