an open book (in both regular or figurative meaning) means "un livre ouvert" in French.
To say "open your exercise book" in French, you would say "Ouvre ton cahier d'exercices."
Ouvrez vos livres a la page....
you can say OPEN SUNDAY : ouvert le dimanche
mon livre francais
Open-minded is "d'esprit ouvert" is "ouvert d'esprit" (both are correct) in French.
un livre
calepin
livre
livre
Ouvert jusqu'à ..
The term "A fantasy book" is translated into French as "Une livre de fantaisie".
according to my french book it's Au secours