How about Documentation?
H5P has already been translated into many languages and there is a big number enthusiasts prepared to contribute with revisions and additions. This is very encouraging for developers and users.
I believe the next step to take now should be to create the option of translating the "Documentation" section of this website into other languages. It is true that English is a must to survive in the Internet jungle, but it is sometimes a good relief to read documentation in one's own language.
Despite the fact that the content is quite big, I am, to set an example, prepared to translate it into Turkish if I am provided with the content in an editable format (.doc, .docx or .odt).