PressBooks has added a couple of new languages: German (thanks Ron!) and Estonian (thanks Karol Kallas!).
If you would like to improve either translations, please contact us, or fork the files on github:
First, to change the PressBooks User Interface to a new language:
1. Login to PressBooks, and Edit Profile
2/3. Scroll Down and select your Language, then click on Update Profile
Now if you’d like to modify your EXPORTS as well …
4. Go to “Book Information”
5. Finally, choose your Export language. If supported, Exports will modify various text, such as Contents
All of these translation features are FIRST DRAFTS. They all need improvement. You can find existing PressBooks translations on Github, please fork & improve. Please contact us if you would like to help: email@example.com.