How can I translate the name of the pages "about, reader, sign up, log in"?

Hello, I have just opened an instance and it is directed to Spanish speakers. I would like to know how to translate this kind of texts, as I have seen some instances in other languages (for example: Chinese) and they have customized texts. The pages in question are: about, reader, sign up, log in, privacy or texts like “No posts here yet!”

In advance thank you very much.