You can download our English and translated RawTherapee manuals in the PDF format from these links:
RawTherapee Manual - v4.0.8 - English (work in progress, last update 2012-04-01, see the live version for the most recent version)
RawTherapee Manual - v4.0.8 - English (work in progress, last update 2012-04-01, see the live version for the most recent version)
You are very welcome to help us by translating the latest RawTherapee documentation into your language! For more information please read this introductory article on manual translations in our forum.