Hey PrimaveraCero,
About the documents you have to bring with you: if you are successful until the FI (and I hope you will ;-) ) you'll give to the recruiters:
1) copy or your passport
2) if you're working, a copy of your contrat or a copy of your professional card
3)copy of your high school degree and your diploma(s)
4)They also ask for 6 passport-sized photographs, 1 full lenght photo in bussines attire, and 2 casuals. The passport-sized are mandatory for the FI, for the other you can't wait to be at home for choosing the good one

.
They don't ask for proof of languages studies and it's not necessary to translate the document in english. They ask it only for your medicals if you are successful.
For proof of studies, i don't know but i think it's better to bring it with you.
Don't forget the photographs, the update cv and a bright smile for the OD!!
Good luck!!!
