Thank your for this quick answer. Yes, I already read this tutorial. My question was about the structure of the website using 2 languages. Do you provide something particular for example regarding the Menu where a visitor will probably want to switch between french and english articles.
I know Polylang plugin (free or $$) is pretty good at that but in term of structure, are you offering something interresting and good looking? (little flags into a box or into a menu, name of the language, etc.)